# Sendero Resources Rebuilds Peñas Negras Drill Assay Database, Applying Consistent CuEq Methodology Across 77 Historical Holes Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f Original source: https://www.thenewswire.com/press-releases/1LymF9yEy-sendero-resources-rebuilds-penas-negras-drill-assay-database-applying-consistent-cueq-methodology-across-77-historical-holes.html Publisher: thenewswire Original announcement: 2026-09-23T11:46:10.766Z Analysis by Minestarters Atlas Atlas analysis published: 2026-09-23T11:51:48.559Z Atlas analysis updated: 2026-09-23T11:51:48.559Z - Company: Sendero Resources Corp. - Ticker: SEND - Exchange: Unavailable - Region: La Rioja province, Argentina - Primary commodity: Copper - Secondary commodities: Gold, Silver, Molybdenum, Zinc, Lead - Document categories: Drill results - Extracted: 2026-09-23 11:51:49 UTC Narrative sentiment: 0.70 · Bullish ## Minestarters Atlas summary Sendero Resources has re-evaluated 77 historical drill holes from its Peñas Negras copper-gold project in Argentina, applying a consistent copper equivalent \(CuEq\) methodology. This work provides a unified, project-wide view of mineralization, which begins near surface and extends to over 350 meters downhole. Notable intercepts include 44.2 meters at 1.23% CuEq in PNDH-06 and 43.6 meters at 1% CuEq in PND-02. Reasoning: Sendero Resources has successfully re-evaluated 77 historical drill holes at Peñas Negras using a consistent CuEq methodology, revealing significant near-surface copper equivalent intercepts and providing a comprehensive project understanding, despite the data being historical and true widths not being available. - Positive factor: Consistent CuEq methodology applied across historical database - Positive factor: High-grade copper equivalent intercepts - Positive factor: Project-wide view of mineralization - Positive factor: Mineralization begins near surface - Positive factor: QP review and approval - Negative factor: Historical data re-evaluation, not new drilling - Negative factor: 100% recovery assumption for CuEq calculation - Negative factor: True width of intercepts not stated Facts used in scoring: 180 ## Classification and evidence No classification tags are available. ## Extracted facts Stored fact records: 180. Some facts used in scoring do not have a stored record. ## Drill Results (180) ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-0) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 770 - Grade Unit: ppm - Intercept: 236.1 m - From: 31.9 m - To: 268 m - Intercept Depth: 31.9 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:31.9-268 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.57 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 770 Context: 236.1 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-1) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.27 - Grade Unit: g/t - Intercept: 236.1 m - From: 31.9 m - To: 268 m - Intercept Depth: 31.9 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:31.9-268 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.57 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.27 Context: 236.1 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-2) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 5.87 - Grade Unit: g/t - Intercept: 236.1 m - From: 31.9 m - To: 268 m - Intercept Depth: 31.9 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:31.9-268 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.57 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 5.87 Context: 236.1 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-3) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 33.4 - Grade Unit: ppm - Intercept: 236.1 m - From: 31.9 m - To: 268 m - Intercept Depth: 31.9 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:31.9-268 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.57 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 33.4 Context: 236.1 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-4) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2036 - Grade Unit: ppm - Intercept: 236.1 m - From: 31.9 m - To: 268 m - Intercept Depth: 31.9 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:31.9-268 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.57 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 2036 Context: 236.1 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-5) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 806 - Grade Unit: ppm - Intercept: 236.1 m - From: 31.9 m - To: 268 m - Intercept Depth: 31.9 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:31.9-268 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.57 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 806 Context: 236.1 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-6) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 927 - Grade Unit: ppm - Intercept: 44.2 m - From: 33.8 m - To: 78 m - Intercept Depth: 33.8 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:33.8-78 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 927 Context: 44.2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-7) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.4 - Grade Unit: g/t - Intercept: 44.2 m - From: 33.8 m - To: 78 m - Intercept Depth: 33.8 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:33.8-78 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.4 Context: 44.2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-8) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 23.55 - Grade Unit: g/t - Intercept: 44.2 m - From: 33.8 m - To: 78 m - Intercept Depth: 33.8 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:33.8-78 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 23.55 Context: 44.2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-9) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 40.1 - Grade Unit: ppm - Intercept: 44.2 m - From: 33.8 m - To: 78 m - Intercept Depth: 33.8 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:33.8-78 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 40.1 Context: 44.2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-10) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 5829 - Grade Unit: ppm - Intercept: 44.2 m - From: 33.8 m - To: 78 m - Intercept Depth: 33.8 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:33.8-78 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 5829 Context: 44.2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-11) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 3567 - Grade Unit: ppm - Intercept: 44.2 m - From: 33.8 m - To: 78 m - Intercept Depth: 33.8 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:33.8-78 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 3567 Context: 44.2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-12) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1535 - Grade Unit: ppm - Intercept: 24 m - From: 54 m - To: 78 m - Intercept Depth: 54 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:54-78 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1535 Context: 24 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-13) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.4 - Grade Unit: g/t - Intercept: 24 m - From: 54 m - To: 78 m - Intercept Depth: 54 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:54-78 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.4 Context: 24 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-14) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 28.32 - Grade Unit: g/t - Intercept: 24 m - From: 54 m - To: 78 m - Intercept Depth: 54 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:54-78 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 28.32 Context: 24 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-15) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 38.3 - Grade Unit: ppm - Intercept: 24 m - From: 54 m - To: 78 m - Intercept Depth: 54 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:54-78 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 38.3 Context: 24 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-16) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 10679 - Grade Unit: ppm - Intercept: 24 m - From: 54 m - To: 78 m - Intercept Depth: 54 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:54-78 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 10679 Context: 24 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-17) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 3813 - Grade Unit: ppm - Intercept: 24 m - From: 54 m - To: 78 m - Intercept Depth: 54 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-06:54-78 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 3813 Context: 24 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-18) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1372 - Grade Unit: ppm - Intercept: 268 m - From: 84 m - To: 352 m - Intercept Depth: 84 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-03:84-352 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1372 Context: 268 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-19) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.29 - Grade Unit: g/t - Intercept: 268 m - From: 84 m - To: 352 m - Intercept Depth: 84 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-03:84-352 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.29 Context: 268 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-20) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.74 - Grade Unit: g/t - Intercept: 268 m - From: 84 m - To: 352 m - Intercept Depth: 84 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-03:84-352 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.74 Context: 268 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-21) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 45.6 - Grade Unit: ppm - Intercept: 268 m - From: 84 m - To: 352 m - Intercept Depth: 84 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-03:84-352 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 45.6 Context: 268 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-22) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 152 - Grade Unit: ppm - Intercept: 268 m - From: 84 m - To: 352 m - Intercept Depth: 84 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-03:84-352 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 152 Context: 268 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-23) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 33 - Grade Unit: ppm - Intercept: 268 m - From: 84 m - To: 352 m - Intercept Depth: 84 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-03:84-352 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 33 Context: 268 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-24) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1834 - Grade Unit: ppm - Intercept: 62 m - From: 92 m - To: 154 m - Intercept Depth: 92 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-03:92-154 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1834 Context: 62 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-25) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.37 - Grade Unit: g/t - Intercept: 62 m - From: 92 m - To: 154 m - Intercept Depth: 92 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-03:92-154 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.37 Context: 62 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-26) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.12 - Grade Unit: g/t - Intercept: 62 m - From: 92 m - To: 154 m - Intercept Depth: 92 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-03:92-154 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1.12 Context: 62 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-27) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 70.2 - Grade Unit: ppm - Intercept: 62 m - From: 92 m - To: 154 m - Intercept Depth: 92 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-03:92-154 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 70.2 Context: 62 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-28) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 284 - Grade Unit: ppm - Intercept: 62 m - From: 92 m - To: 154 m - Intercept Depth: 92 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-03:92-154 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 284 Context: 62 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-29) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 55 - Grade Unit: ppm - Intercept: 62 m - From: 92 m - To: 154 m - Intercept Depth: 92 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-03:92-154 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 55 Context: 62 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-30) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1299 - Grade Unit: ppm - Intercept: 266 m - From: 96 m - To: 362 m - Intercept Depth: 96 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-04:96-362 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1299 Context: 266 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-31) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.22 - Grade Unit: g/t - Intercept: 266 m - From: 96 m - To: 362 m - Intercept Depth: 96 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-04:96-362 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.22 Context: 266 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-32) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.22 - Grade Unit: g/t - Intercept: 266 m - From: 96 m - To: 362 m - Intercept Depth: 96 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-04:96-362 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 2.22 Context: 266 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-33) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 39 - Grade Unit: ppm - Intercept: 266 m - From: 96 m - To: 362 m - Intercept Depth: 96 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-04:96-362 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 39 Context: 266 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-34) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1308 - Grade Unit: ppm - Intercept: 266 m - From: 96 m - To: 362 m - Intercept Depth: 96 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-04:96-362 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1308 Context: 266 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-35) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 467 - Grade Unit: ppm - Intercept: 266 m - From: 96 m - To: 362 m - Intercept Depth: 96 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-04:96-362 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 467 Context: 266 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-36) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1905 - Grade Unit: ppm - Intercept: 52 m - From: 122 m - To: 174 m - Intercept Depth: 122 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-04:122-174 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1905 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-37) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.3 - Grade Unit: g/t - Intercept: 52 m - From: 122 m - To: 174 m - Intercept Depth: 122 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-04:122-174 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.3 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-38) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.73 - Grade Unit: g/t - Intercept: 52 m - From: 122 m - To: 174 m - Intercept Depth: 122 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-04:122-174 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1.73 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-39) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 42.8 - Grade Unit: ppm - Intercept: 52 m - From: 122 m - To: 174 m - Intercept Depth: 122 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-04:122-174 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 42.8 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-40) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 775 - Grade Unit: ppm - Intercept: 52 m - From: 122 m - To: 174 m - Intercept Depth: 122 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-04:122-174 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 775 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-41) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 308 - Grade Unit: ppm - Intercept: 52 m - From: 122 m - To: 174 m - Intercept Depth: 122 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNDH-04:122-174 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 308 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-42) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 757 - Grade Unit: ppm - Intercept: 208.4 m - From: 38.6 m - To: 247 m - Intercept Depth: 38.6 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PND-02:38.6-247 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 757 Context: 208.4 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-43) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.38 - Grade Unit: g/t - Intercept: 208.4 m - From: 38.6 m - To: 247 m - Intercept Depth: 38.6 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PND-02:38.6-247 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.38 Context: 208.4 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-44) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.54 - Grade Unit: g/t - Intercept: 208.4 m - From: 38.6 m - To: 247 m - Intercept Depth: 38.6 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PND-02:38.6-247 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1.54 Context: 208.4 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-45) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 23.3 - Grade Unit: ppm - Intercept: 208.4 m - From: 38.6 m - To: 247 m - Intercept Depth: 38.6 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PND-02:38.6-247 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 23.3 Context: 208.4 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-46) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 699 - Grade Unit: ppm - Intercept: 208.4 m - From: 38.6 m - To: 247 m - Intercept Depth: 38.6 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PND-02:38.6-247 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 699 Context: 208.4 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-47) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 195 - Grade Unit: ppm - Intercept: 208.4 m - From: 38.6 m - To: 247 m - Intercept Depth: 38.6 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PND-02:38.6-247 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 195 Context: 208.4 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-48) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1405 - Grade Unit: ppm - Intercept: 43.6 m - From: 47.4 m - To: 91 m - Intercept Depth: 47.4 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PND-02:47.4-91 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1405 Context: 43.6 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-49) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.75 - Grade Unit: g/t - Intercept: 43.6 m - From: 47.4 m - To: 91 m - Intercept Depth: 47.4 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PND-02:47.4-91 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.75 Context: 43.6 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-50) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.47 - Grade Unit: g/t - Intercept: 43.6 m - From: 47.4 m - To: 91 m - Intercept Depth: 47.4 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PND-02:47.4-91 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.47 Context: 43.6 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-51) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 34.2 - Grade Unit: ppm - Intercept: 43.6 m - From: 47.4 m - To: 91 m - Intercept Depth: 47.4 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PND-02:47.4-91 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 34.2 Context: 43.6 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-52) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 461 - Grade Unit: ppm - Intercept: 43.6 m - From: 47.4 m - To: 91 m - Intercept Depth: 47.4 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PND-02:47.4-91 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 461 Context: 43.6 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-53) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 79 - Grade Unit: ppm - Intercept: 43.6 m - From: 47.4 m - To: 91 m - Intercept Depth: 47.4 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PND-02:47.4-91 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 79 Context: 43.6 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-54) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 104 - Grade Unit: ppm - Intercept: 102 m - From: 56 m - To: 158 m - Intercept Depth: 56 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:56-158 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.93 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 104 Context: 102 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-55) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.78 - Grade Unit: g/t - Intercept: 102 m - From: 56 m - To: 158 m - Intercept Depth: 56 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:56-158 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.93 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.78 Context: 102 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-56) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.84 - Grade Unit: g/t - Intercept: 102 m - From: 56 m - To: 158 m - Intercept Depth: 56 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:56-158 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.93 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1.84 Context: 102 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-57) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.6 - Grade Unit: ppm - Intercept: 102 m - From: 56 m - To: 158 m - Intercept Depth: 56 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:56-158 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.93 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 2.6 Context: 102 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-58) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 737 - Grade Unit: ppm - Intercept: 102 m - From: 56 m - To: 158 m - Intercept Depth: 56 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:56-158 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.93 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 737 Context: 102 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-59) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 283 - Grade Unit: ppm - Intercept: 102 m - From: 56 m - To: 158 m - Intercept Depth: 56 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:56-158 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.93 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 283 Context: 102 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-60) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 157 - Grade Unit: ppm - Intercept: 32 m - From: 100 m - To: 132 m - Intercept Depth: 100 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:100-132 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 157 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-61) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.69 - Grade Unit: g/t - Intercept: 32 m - From: 100 m - To: 132 m - Intercept Depth: 100 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:100-132 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows an exceptional gold grade within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Exceptional gold grade for porphyry - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1.69 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-62) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 3.48 - Grade Unit: g/t - Intercept: 32 m - From: 100 m - To: 132 m - Intercept Depth: 100 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:100-132 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 3.48 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-63) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.4 - Grade Unit: ppm - Intercept: 32 m - From: 100 m - To: 132 m - Intercept Depth: 100 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:100-132 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 2.4 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-64) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 489 - Grade Unit: ppm - Intercept: 32 m - From: 100 m - To: 132 m - Intercept Depth: 100 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:100-132 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 489 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-65) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 189 - Grade Unit: ppm - Intercept: 32 m - From: 100 m - To: 132 m - Intercept Depth: 100 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:100-132 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 189 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-66) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 118 - Grade Unit: ppm - Intercept: 2 m - From: 130 m - To: 132 m - Intercept Depth: 130 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:130-132 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though over a narrow length and true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated - Negative factor: Narrow intercept length Evidence · table > 118 Context: 2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-67) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 20.58 - Grade Unit: g/t - Intercept: 2 m - From: 130 m - To: 132 m - Intercept Depth: 130 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:130-132 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows an exceptional gold grade within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though over a narrow length and true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Exceptional gold grade for porphyry - Positive factor: Bonanza Intercept - Negative factor: Historical data - Negative factor: True width not stated - Negative factor: Narrow intercept length Evidence · table > 20.58 Context: 2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-68) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 31.2 - Grade Unit: g/t - Intercept: 2 m - From: 130 m - To: 132 m - Intercept Depth: 130 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:130-132 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though over a narrow length and true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated - Negative factor: Narrow intercept length Evidence · table > 31.2 Context: 2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-69) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 3 - Grade Unit: ppm - Intercept: 2 m - From: 130 m - To: 132 m - Intercept Depth: 130 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:130-132 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though over a narrow length and true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated - Negative factor: Narrow intercept length Evidence · table > 3 Context: 2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-70) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 582 - Grade Unit: ppm - Intercept: 2 m - From: 130 m - To: 132 m - Intercept Depth: 130 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:130-132 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though over a narrow length and true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated - Negative factor: Narrow intercept length Evidence · table > 582 Context: 2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-71) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 262 - Grade Unit: ppm - Intercept: 2 m - From: 130 m - To: 132 m - Intercept Depth: 130 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-28:130-132 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though over a narrow length and true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated - Negative factor: Narrow intercept length Evidence · table > 262 Context: 2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-72) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 961 - Grade Unit: ppm - Intercept: 161 m - From: 59 m - To: 220 m - Intercept Depth: 59 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-30:59-220 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 961 Context: 161 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-73) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.33 - Grade Unit: g/t - Intercept: 161 m - From: 59 m - To: 220 m - Intercept Depth: 59 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-30:59-220 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.33 Context: 161 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-74) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.02 - Grade Unit: g/t - Intercept: 161 m - From: 59 m - To: 220 m - Intercept Depth: 59 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-30:59-220 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 2.02 Context: 161 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-75) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 24.2 - Grade Unit: ppm - Intercept: 161 m - From: 59 m - To: 220 m - Intercept Depth: 59 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-30:59-220 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 24.2 Context: 161 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-76) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 925 - Grade Unit: ppm - Intercept: 161 m - From: 59 m - To: 220 m - Intercept Depth: 59 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-30:59-220 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 925 Context: 161 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-77) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 263 - Grade Unit: ppm - Intercept: 161 m - From: 59 m - To: 220 m - Intercept Depth: 59 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-30:59-220 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 263 Context: 161 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-78) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1236 - Grade Unit: ppm - Intercept: 18 m - From: 110 m - To: 128 m - Intercept Depth: 110 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-30:110-128 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1236 Context: 18 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-79) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.66 - Grade Unit: g/t - Intercept: 18 m - From: 110 m - To: 128 m - Intercept Depth: 110 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-30:110-128 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows a strong gold grade within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Strong gold grade for porphyry - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.66 Context: 18 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-80) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 10.91 - Grade Unit: g/t - Intercept: 18 m - From: 110 m - To: 128 m - Intercept Depth: 110 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-30:110-128 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 10.91 Context: 18 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-81) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 27.9 - Grade Unit: ppm - Intercept: 18 m - From: 110 m - To: 128 m - Intercept Depth: 110 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-30:110-128 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 27.9 Context: 18 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-82) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 5232 - Grade Unit: ppm - Intercept: 18 m - From: 110 m - To: 128 m - Intercept Depth: 110 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-30:110-128 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 5232 Context: 18 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-83) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1618 - Grade Unit: ppm - Intercept: 18 m - From: 110 m - To: 128 m - Intercept Depth: 110 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-30:110-128 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1618 Context: 18 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-84) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1217 - Grade Unit: ppm - Intercept: 188 m - From: 82 m - To: 270 m - Intercept Depth: 82 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-33:82-270 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1217 Context: 188 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-85) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.27 - Grade Unit: g/t - Intercept: 188 m - From: 82 m - To: 270 m - Intercept Depth: 82 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-33:82-270 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.27 Context: 188 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-86) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.8 - Grade Unit: g/t - Intercept: 188 m - From: 82 m - To: 270 m - Intercept Depth: 82 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-33:82-270 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.8 Context: 188 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-87) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 38.7 - Grade Unit: ppm - Intercept: 188 m - From: 82 m - To: 270 m - Intercept Depth: 82 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-33:82-270 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 38.7 Context: 188 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-88) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 155 - Grade Unit: ppm - Intercept: 188 m - From: 82 m - To: 270 m - Intercept Depth: 82 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-33:82-270 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 155 Context: 188 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-89) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 39 - Grade Unit: ppm - Intercept: 188 m - From: 82 m - To: 270 m - Intercept Depth: 82 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-33:82-270 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 39 Context: 188 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-90) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2003 - Grade Unit: ppm - Intercept: 32 m - From: 118 m - To: 150 m - Intercept Depth: 118 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-33:118-150 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 2003 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-91) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.33 - Grade Unit: g/t - Intercept: 32 m - From: 118 m - To: 150 m - Intercept Depth: 118 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-33:118-150 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.33 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-92) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.88 - Grade Unit: g/t - Intercept: 32 m - From: 118 m - To: 150 m - Intercept Depth: 118 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-33:118-150 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.88 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-93) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 51.1 - Grade Unit: ppm - Intercept: 32 m - From: 118 m - To: 150 m - Intercept Depth: 118 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-33:118-150 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 51.1 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-94) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 73 - Grade Unit: ppm - Intercept: 32 m - From: 118 m - To: 150 m - Intercept Depth: 118 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-33:118-150 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 73 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-95) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 28 - Grade Unit: ppm - Intercept: 32 m - From: 118 m - To: 150 m - Intercept Depth: 118 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-33:118-150 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 28 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-96) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 872 - Grade Unit: ppm - Intercept: 196 m - From: 44 m - To: 240 m - Intercept Depth: 44 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-23:44-240 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 872 Context: 196 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-97) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.23 - Grade Unit: g/t - Intercept: 196 m - From: 44 m - To: 240 m - Intercept Depth: 44 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-23:44-240 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.23 Context: 196 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-98) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.3 - Grade Unit: g/t - Intercept: 196 m - From: 44 m - To: 240 m - Intercept Depth: 44 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-23:44-240 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 2.3 Context: 196 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-99) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 26.7 - Grade Unit: ppm - Intercept: 196 m - From: 44 m - To: 240 m - Intercept Depth: 44 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-23:44-240 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 26.7 Context: 196 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-100) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1135 - Grade Unit: ppm - Intercept: 196 m - From: 44 m - To: 240 m - Intercept Depth: 44 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-23:44-240 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1135 Context: 196 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-101) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 270 - Grade Unit: ppm - Intercept: 196 m - From: 44 m - To: 240 m - Intercept Depth: 44 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-23:44-240 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 270 Context: 196 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-102) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 824 - Grade Unit: ppm - Intercept: 14 m - From: 200 m - To: 214 m - Intercept Depth: 200 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-23:200-214 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 824 Context: 14 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-103) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.75 - Grade Unit: g/t - Intercept: 14 m - From: 200 m - To: 214 m - Intercept Depth: 200 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-23:200-214 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of gold within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.75 Context: 14 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-104) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 6.26 - Grade Unit: g/t - Intercept: 14 m - From: 200 m - To: 214 m - Intercept Depth: 200 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-23:200-214 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 6.26 Context: 14 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-105) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 18.3 - Grade Unit: ppm - Intercept: 14 m - From: 200 m - To: 214 m - Intercept Depth: 200 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-23:200-214 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 18.3 Context: 14 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-106) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2237 - Grade Unit: ppm - Intercept: 14 m - From: 200 m - To: 214 m - Intercept Depth: 200 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-23:200-214 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 2237 Context: 14 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-107) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 556 - Grade Unit: ppm - Intercept: 14 m - From: 200 m - To: 214 m - Intercept Depth: 200 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-23:200-214 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical sub-interval shows the presence of lead within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of lead within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 556 Context: 14 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-108) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1170 - Grade Unit: ppm - Intercept: 68 m - From: 32 m - To: 100 m - Intercept Depth: 32 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-03:32-100 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.15 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of copper within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of copper within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 1170 Context: 68 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-109) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.85 - Grade Unit: g/t - Intercept: 68 m - From: 32 m - To: 100 m - Intercept Depth: 32 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-03:32-100 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.15 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows a strong gold grade within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Strong gold grade for porphyry - Positive factor: Presence of gold within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 0.85 Context: 68 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-110) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.94 - Grade Unit: g/t - Intercept: 68 m - From: 32 m - To: 100 m - Intercept Depth: 32 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-03:32-100 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.15 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of silver within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of silver within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 2.94 Context: 68 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-111) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 51.2 - Grade Unit: ppm - Intercept: 68 m - From: 32 m - To: 100 m - Intercept Depth: 32 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-03:32-100 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.15 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of molybdenum within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of molybdenum within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 51.2 Context: 68 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-112) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 339 - Grade Unit: ppm - Intercept: 68 m - From: 32 m - To: 100 m - Intercept Depth: 32 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: PNR-03:32-100 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.15 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: This historical intercept shows the presence of zinc within a broader polymetallic zone, re-evaluated in the context of a new CuEq methodology, though true width is not provided. - Positive factor: Consistent CuEq methodology applied \(context\) - Positive factor: Presence of zinc within polymetallic zone - Negative factor: Historical data - Negative factor: True width not stated Evidence · table > 339 Context: 68 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-113) Peñas Negras · lead #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 353 - Grade Unit: ppm - Intercept: 68 m - From: 32 m - To: 100 m - Intercept Depth: 32 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-03:32-100 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.15 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 353 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 353 Context: PNR-03 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-05 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-114) Peñas Negras · gold #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.19 - Grade Unit: g/t - Intercept: 194 m - From: 234 m - To: 428 m - Intercept Depth: 234 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-05:234-428 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.19 g/t gold is moderate against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 36.9 g/t·m is moderate \(grade alone is weak; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.19 Context: PNDH-05 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-05 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-115) Peñas Negras · silver #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.99 - Grade Unit: g/t - Intercept: 194 m - From: 234 m - To: 428 m - Intercept Depth: 234 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-05:234-428 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 1.99 g/t silver is weak against the default band \[500, 200, 100, 30\] g/t. Grade×width 386.1 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 1.99 Context: PNDH-05 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-05 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-116) Peñas Negras · copper #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 899 - Grade Unit: ppm - Intercept: 194 m - From: 234 m - To: 428 m - Intercept Depth: 234 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-05:234-428 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 899 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 899 Context: PNDH-05 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-05 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-117) Peñas Negras · molybdenum #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 40.6 - Grade Unit: ppm - Intercept: 194 m - From: 234 m - To: 428 m - Intercept Depth: 234 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-05:234-428 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 40.6 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 40.6 Context: PNDH-05 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-05 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-118) Peñas Negras · zinc #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 971 - Grade Unit: ppm - Intercept: 194 m - From: 234 m - To: 428 m - Intercept Depth: 234 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-05:234-428 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 971 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 971 Context: PNDH-05 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-05 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-119) Peñas Negras · lead #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 247 - Grade Unit: ppm - Intercept: 194 m - From: 234 m - To: 428 m - Intercept Depth: 234 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-05:234-428 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 247 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 247 Context: PNDH-05 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-22 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-120) Peñas Negras · gold #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.35 - Grade Unit: g/t - Intercept: 122 m - From: 34 m - To: 156 m - Intercept Depth: 34 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-22:34-156 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.51 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.35 g/t gold is moderate against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 42.7 g/t·m is moderate. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.35 Context: PNR-22 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-22 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-121) Peñas Negras · silver #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.98 - Grade Unit: g/t - Intercept: 122 m - From: 34 m - To: 156 m - Intercept Depth: 34 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-22:34-156 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.51 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.98 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 119.6 g/t·m is below. - Negative factor: 0.98 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.98 Context: PNR-22 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-22 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-122) Peñas Negras · copper #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 803 - Grade Unit: ppm - Intercept: 122 m - From: 34 m - To: 156 m - Intercept Depth: 34 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-22:34-156 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.51 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 803 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 803 Context: PNR-22 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-22 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-123) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 32 - Grade Unit: ppm - Intercept: 122 m - From: 34 m - To: 156 m - Intercept Depth: 34 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-22:34-156 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.51 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 32 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 32 Context: PNR-22 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-22 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-124) Peñas Negras · zinc #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 469 - Grade Unit: ppm - Intercept: 122 m - From: 34 m - To: 156 m - Intercept Depth: 34 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-22:34-156 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.51 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 469 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 469 Context: PNR-22 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-22 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-125) Peñas Negras · lead #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 90 - Grade Unit: ppm - Intercept: 122 m - From: 34 m - To: 156 m - Intercept Depth: 34 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-22:34-156 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.51 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 90 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 90 Context: PNR-22 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-126) Peñas Negras · gold #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.2 - Grade Unit: g/t - Intercept: 148 m - From: 8 m - To: 156 m - Intercept Depth: 8 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-36:8-156 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.2 g/t gold is weak against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 29.6 g/t·m is weak. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.2 Context: PNR-36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-127) Peñas Negras · silver #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.39 - Grade Unit: g/t - Intercept: 148 m - From: 8 m - To: 156 m - Intercept Depth: 8 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-36:8-156 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 2.39 g/t silver is weak against the default band \[500, 200, 100, 30\] g/t. Grade×width 353.7 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 2.39 Context: PNR-36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-128) Peñas Negras · copper #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 394 - Grade Unit: ppm - Intercept: 148 m - From: 8 m - To: 156 m - Intercept Depth: 8 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-36:8-156 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 394 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 394 Context: PNR-36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-129) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 9.3 - Grade Unit: ppm - Intercept: 148 m - From: 8 m - To: 156 m - Intercept Depth: 8 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-36:8-156 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 9.3 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 9.3 Context: PNR-36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-130) Peñas Negras · zinc #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1496 - Grade Unit: ppm - Intercept: 148 m - From: 8 m - To: 156 m - Intercept Depth: 8 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-36:8-156 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 1496 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 1496 Context: PNR-36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-131) Peñas Negras · lead #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 325 - Grade Unit: ppm - Intercept: 148 m - From: 8 m - To: 156 m - Intercept Depth: 8 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-36:8-156 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 325 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 325 Context: PNR-36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-132) Peñas Negras · gold #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.35 - Grade Unit: g/t - Intercept: 100 m - From: 2 m - To: 102 m - Intercept Depth: 2 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-39:2-102 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.35 g/t gold is moderate against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 35.0 g/t·m is moderate. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.35 Context: PNR-39 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-133) Peñas Negras · silver #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.69 - Grade Unit: g/t - Intercept: 100 m - From: 2 m - To: 102 m - Intercept Depth: 2 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-39:2-102 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 2.69 g/t silver is weak against the default band \[500, 200, 100, 30\] g/t. Grade×width 269.0 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 2.69 Context: PNR-39 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-134) Peñas Negras · copper #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 319 - Grade Unit: ppm - Intercept: 100 m - From: 2 m - To: 102 m - Intercept Depth: 2 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-39:2-102 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 319 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 319 Context: PNR-39 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-135) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 9.1 - Grade Unit: ppm - Intercept: 100 m - From: 2 m - To: 102 m - Intercept Depth: 2 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-39:2-102 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 9.1 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 9.1 Context: PNR-39 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-136) Peñas Negras · zinc #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 553 - Grade Unit: ppm - Intercept: 100 m - From: 2 m - To: 102 m - Intercept Depth: 2 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-39:2-102 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 553 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 553 Context: PNR-39 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-137) Peñas Negras · lead #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 150 - Grade Unit: ppm - Intercept: 100 m - From: 2 m - To: 102 m - Intercept Depth: 2 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-39:2-102 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 150 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 150 Context: PNR-39 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-138) Peñas Negras · gold #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.17 - Grade Unit: g/t - Intercept: 150 m - From: 58 m - To: 208 m - Intercept Depth: 58 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-29:58-208 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.27 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.17 g/t gold is weak against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 25.5 g/t·m is weak. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.17 Context: PNR-29 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-139) Peñas Negras · silver #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.42 - Grade Unit: g/t - Intercept: 150 m - From: 58 m - To: 208 m - Intercept Depth: 58 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-29:58-208 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.27 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.42 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 63.0 g/t·m is below. - Negative factor: 0.42 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.42 Context: PNR-29 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-140) Peñas Negras · copper #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 511 - Grade Unit: ppm - Intercept: 150 m - From: 58 m - To: 208 m - Intercept Depth: 58 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-29:58-208 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.27 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 511 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 511 Context: PNR-29 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-141) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 13.2 - Grade Unit: ppm - Intercept: 150 m - From: 58 m - To: 208 m - Intercept Depth: 58 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-29:58-208 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.27 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 13.2 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 13.2 Context: PNR-29 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-142) Peñas Negras · zinc #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 443 - Grade Unit: ppm - Intercept: 150 m - From: 58 m - To: 208 m - Intercept Depth: 58 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-29:58-208 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.27 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 443 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 443 Context: PNR-29 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-143) Peñas Negras · lead #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 57 - Grade Unit: ppm - Intercept: 150 m - From: 58 m - To: 208 m - Intercept Depth: 58 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-29:58-208 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.27 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 57 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 57 Context: PNR-29 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-01 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-144) Peñas Negras · gold #### Identity - Hole ID: PNDH-01 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.08 - Grade Unit: g/t - Intercept: 194 m - From: 84 m - To: 278 m - Intercept Depth: 84 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-01:84-278 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.2 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.08 g/t gold is weak against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 15.5 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.08 Context: PNDH-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-01 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-145) Peñas Negras · silver #### Identity - Hole ID: PNDH-01 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.53 - Grade Unit: g/t - Intercept: 194 m - From: 84 m - To: 278 m - Intercept Depth: 84 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-01:84-278 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.2 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.53 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 102.8 g/t·m is below. - Negative factor: 0.53 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.53 Context: PNDH-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-01 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-146) Peñas Negras · copper #### Identity - Hole ID: PNDH-01 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 897 - Grade Unit: ppm - Intercept: 194 m - From: 84 m - To: 278 m - Intercept Depth: 84 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-01:84-278 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.2 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 897 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 897 Context: PNDH-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-01 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-147) Peñas Negras · molybdenum #### Identity - Hole ID: PNDH-01 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 17.7 - Grade Unit: ppm - Intercept: 194 m - From: 84 m - To: 278 m - Intercept Depth: 84 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-01:84-278 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.2 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 17.7 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 17.7 Context: PNDH-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-01 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-148) Peñas Negras · zinc #### Identity - Hole ID: PNDH-01 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 172 - Grade Unit: ppm - Intercept: 194 m - From: 84 m - To: 278 m - Intercept Depth: 84 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-01:84-278 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.2 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 172 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 172 Context: PNDH-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-01 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-149) Peñas Negras · lead #### Identity - Hole ID: PNDH-01 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 18 - Grade Unit: ppm - Intercept: 194 m - From: 84 m - To: 278 m - Intercept Depth: 84 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-01:84-278 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.2 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 18 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 18 Context: PNDH-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-08 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-150) Peñas Negras · gold #### Identity - Hole ID: PNDH-08 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.27 - Grade Unit: g/t - Intercept: 82 m - From: 2 m - To: 84 m - Intercept Depth: 2 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-08:2-84 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.27 g/t gold is weak against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 22.1 g/t·m is weak. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.27 Context: PNDH-08 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-08 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-151) Peñas Negras · silver #### Identity - Hole ID: PNDH-08 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.56 - Grade Unit: g/t - Intercept: 82 m - From: 2 m - To: 84 m - Intercept Depth: 2 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-08:2-84 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 2.56 g/t silver is weak against the default band \[500, 200, 100, 30\] g/t. Grade×width 209.9 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 2.56 Context: PNDH-08 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-08 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-152) Peñas Negras · copper #### Identity - Hole ID: PNDH-08 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 365 - Grade Unit: ppm - Intercept: 82 m - From: 2 m - To: 84 m - Intercept Depth: 2 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-08:2-84 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 365 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 365 Context: PNDH-08 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-08 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-153) Peñas Negras · molybdenum #### Identity - Hole ID: PNDH-08 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 11.9 - Grade Unit: ppm - Intercept: 82 m - From: 2 m - To: 84 m - Intercept Depth: 2 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-08:2-84 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 11.9 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 11.9 Context: PNDH-08 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-08 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-154) Peñas Negras · zinc #### Identity - Hole ID: PNDH-08 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 758 - Grade Unit: ppm - Intercept: 82 m - From: 2 m - To: 84 m - Intercept Depth: 2 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-08:2-84 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 758 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 758 Context: PNDH-08 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-08 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-155) Peñas Negras · lead #### Identity - Hole ID: PNDH-08 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 254 - Grade Unit: ppm - Intercept: 82 m - From: 2 m - To: 84 m - Intercept Depth: 2 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-08:2-84 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 254 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 254 Context: PNDH-08 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-61 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-156) Peñas Negras · gold #### Identity - Hole ID: PNR-61 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.24 - Grade Unit: g/t - Intercept: 94 m - From: 260 m - To: 354 m - Intercept Depth: 260 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-61:260-354 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.24 g/t gold is weak against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 22.6 g/t·m is weak. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.24 Context: PNR-61 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-61 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-157) Peñas Negras · silver #### Identity - Hole ID: PNR-61 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.64 - Grade Unit: g/t - Intercept: 94 m - From: 260 m - To: 354 m - Intercept Depth: 260 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-61:260-354 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.64 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 60.2 g/t·m is below. - Negative factor: 0.64 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.64 Context: PNR-61 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-61 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-158) Peñas Negras · copper #### Identity - Hole ID: PNR-61 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 313 - Grade Unit: ppm - Intercept: 94 m - From: 260 m - To: 354 m - Intercept Depth: 260 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-61:260-354 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 313 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 313 Context: PNR-61 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-61 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-159) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-61 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 12.6 - Grade Unit: ppm - Intercept: 94 m - From: 260 m - To: 354 m - Intercept Depth: 260 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-61:260-354 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 12.6 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 12.6 Context: PNR-61 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-61 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-160) Peñas Negras · zinc #### Identity - Hole ID: PNR-61 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1000 - Grade Unit: ppm - Intercept: 94 m - From: 260 m - To: 354 m - Intercept Depth: 260 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-61:260-354 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 1000 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 1000 Context: PNR-61 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-61 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-161) Peñas Negras · lead #### Identity - Hole ID: PNR-61 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 100 - Grade Unit: ppm - Intercept: 94 m - From: 260 m - To: 354 m - Intercept Depth: 260 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-61:260-354 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 100 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 100 Context: PNR-61 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-162) Peñas Negras · gold #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.18 - Grade Unit: g/t - Intercept: 84 m - From: 24 m - To: 108 m - Intercept Depth: 24 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-21:24-108 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.18 g/t gold is weak against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 15.1 g/t·m is weak. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.18 Context: PNR-21 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-163) Peñas Negras · silver #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.34 - Grade Unit: g/t - Intercept: 84 m - From: 24 m - To: 108 m - Intercept Depth: 24 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-21:24-108 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 2.34 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 196.6 g/t·m is below. - Negative factor: 2.34 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 2.34 Context: PNR-21 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-164) Peñas Negras · copper #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 307 - Grade Unit: ppm - Intercept: 84 m - From: 24 m - To: 108 m - Intercept Depth: 24 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-21:24-108 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 307 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 307 Context: PNR-21 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-165) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 13 - Grade Unit: ppm - Intercept: 84 m - From: 24 m - To: 108 m - Intercept Depth: 24 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-21:24-108 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 13 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 13 Context: PNR-21 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-166) Peñas Negras · zinc #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1131 - Grade Unit: ppm - Intercept: 84 m - From: 24 m - To: 108 m - Intercept Depth: 24 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-21:24-108 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 1131 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 1131 Context: PNR-21 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-167) Peñas Negras · lead #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 346 - Grade Unit: ppm - Intercept: 84 m - From: 24 m - To: 108 m - Intercept Depth: 24 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNR-21:24-108 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 346 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 346 Context: PNR-21 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PND-01 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-168) Peñas Negras · gold #### Identity - Hole ID: PND-01 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.4 - Grade Unit: g/t - Intercept: 46.2 m - From: 149.4 m - To: 195.6 m - Intercept Depth: 149.4 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PND-01:149.4-195.6 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.4 g/t gold is moderate against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 18.5 g/t·m is weak \(grade alone is moderate; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.4 Context: PND-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PND-01 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-169) Peñas Negras · silver #### Identity - Hole ID: PND-01 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.48 - Grade Unit: g/t - Intercept: 46.2 m - From: 149.4 m - To: 195.6 m - Intercept Depth: 149.4 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PND-01:149.4-195.6 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.48 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 22.2 g/t·m is below. - Negative factor: 0.48 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.48 Context: PND-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PND-01 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-170) Peñas Negras · copper #### Identity - Hole ID: PND-01 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 298 - Grade Unit: ppm - Intercept: 46.2 m - From: 149.4 m - To: 195.6 m - Intercept Depth: 149.4 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PND-01:149.4-195.6 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 298 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 298 Context: PND-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PND-01 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-171) Peñas Negras · molybdenum #### Identity - Hole ID: PND-01 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 18.3 - Grade Unit: ppm - Intercept: 46.2 m - From: 149.4 m - To: 195.6 m - Intercept Depth: 149.4 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PND-01:149.4-195.6 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 18.3 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 18.3 Context: PND-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PND-01 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-172) Peñas Negras · zinc #### Identity - Hole ID: PND-01 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 187 - Grade Unit: ppm - Intercept: 46.2 m - From: 149.4 m - To: 195.6 m - Intercept Depth: 149.4 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PND-01:149.4-195.6 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 187 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 187 Context: PND-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PND-01 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-173) Peñas Negras · lead #### Identity - Hole ID: PND-01 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 76 - Grade Unit: ppm - Intercept: 46.2 m - From: 149.4 m - To: 195.6 m - Intercept Depth: 149.4 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PND-01:149.4-195.6 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 76 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 76 Context: PND-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-174) Peñas Negras · gold #### Identity - Hole ID: PNDH-02 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.19 - Grade Unit: g/t - Intercept: 76 m - From: 0 m - To: 76 m - Intercept Depth: 0 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-02:0-76 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.19 g/t gold is weak against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 14.4 g/t·m is weak. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.19 Context: PNDH-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-175) Peñas Negras · silver #### Identity - Hole ID: PNDH-02 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.36 - Grade Unit: g/t - Intercept: 76 m - From: 0 m - To: 76 m - Intercept Depth: 0 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-02:0-76 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.36 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 27.4 g/t·m is below. - Negative factor: 0.36 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.36 Context: PNDH-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-176) Peñas Negras · copper #### Identity - Hole ID: PNDH-02 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 553 - Grade Unit: ppm - Intercept: 76 m - From: 0 m - To: 76 m - Intercept Depth: 0 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-02:0-76 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 553 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 553 Context: PNDH-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-177) Peñas Negras · molybdenum #### Identity - Hole ID: PNDH-02 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 26.2 - Grade Unit: ppm - Intercept: 76 m - From: 0 m - To: 76 m - Intercept Depth: 0 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-02:0-76 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 26.2 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 26.2 Context: PNDH-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-178) Peñas Negras · zinc #### Identity - Hole ID: PNDH-02 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 192 - Grade Unit: ppm - Intercept: 76 m - From: 0 m - To: 76 m - Intercept Depth: 0 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-02:0-76 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 192 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 192 Context: PNDH-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-02 [Link to this fact](https://atlas-staging.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--881ee854-8d75-4191-b1b5-bf635c4d166f#fact-drill-facts-179) Peñas Negras · lead #### Identity - Hole ID: PNDH-02 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 34 - Grade Unit: ppm - Intercept: 76 m - From: 0 m - To: 76 m - Intercept Depth: 0 m #### Classification - Deposit Type: porphyry - Sample Type: drill - Group ID: PNDH-02:0-76 - Mining Method: open\_pit #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % Cu-Eq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 34 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 34 Context: PNDH-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.