# Ucore Updates Mineral Resource Estimate and Technical Report for Bokan Dotson-Ridge Rare Earth Property Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--a42e0292-e096-4707-b89c-86ea75f17321 Original source: https://orestocks.com/company/UCU.V/press-releases/5914929580804646 Publisher: orestocks Original announcement: 2026-04-14T17:11:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-01T04:21:54.741Z Atlas analysis updated: 2026-10-01T04:21:54.741Z - Company: Ucore Rare Metals Inc. - Ticker: UCU - Exchange: TSXV - Region: Southeast Alaska - Primary commodity: Rare earth elements - Secondary commodities: Lanthanum, Cerium, Praseodymium, Neodymium, Samarium, Europium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium, Lutetium, Yttrium - Document categories: Resource update - Extracted: 2026-10-01 04:21:55 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Ucore Rare Metals Inc. has released an upgraded Mineral Resource Estimate for the Bokan Dotson-Ridge project in Alaska, effective April 9, 2026. The update includes 801,600 tonnes of new Measured mineralization derived from 2022 surface channel sampling, contributing to a total resource with a strong heavy rare earth oxide \(HREO\) profile. Reasoning: The upgrade includes significant new measured tonnage from recent surface sampling and highlights a favorable heavy rare earth profile. - Positive factor: Addition of 801,600 tonnes of Measured mineralization from 2022 surface channel sampling - Positive factor: High HREO content \(35-40% of TREO\) - Positive factor: Resource remains open at depth and along strike - Positive factor: NI 43-101 and SEC S-K 1300 compliant reporting - Negative factor: Exclusion of I&L Zone from current estimate Facts used in scoring: 8 ## Classification and evidence **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: The Technical Report has been prepared in accordance with National Instrument 43-101. Evidence · text > prepared in accordance with both National Instrument 43-101 and SEC Regulation S-K 1300 **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: Mr. Jim Robinson is an independent qualified person for the purposes of NI 43-101 standards. Evidence · text > Mr. Robinson is an independent qualified person for the purposes of NI 43-101 **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: The resource estimate assumes a TREO cut-off of 0.4%. Evidence · text > Assuming TREO cut-off of 0.4% ## Extracted facts Stored fact records: 8. Some facts used in scoring do not have a stored record. ## Resource Estimates (8) ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--a42e0292-e096-4707-b89c-86ea75f17321#fact-resource-facts-0) Bokan Dotson-Ridge · total rare earth oxides #### Identity - Project: Bokan Dotson-Ridge - Commodity: total rare earth oxides - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: James Robinson - Resource group id: resource:0d45acbda8b4e8fde381 - Deposit or zone: Dotson Ridge #### Resource Data - Category: measured - Tonnes: 801600 - Grade: 0.6 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % TREO #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: New measured tonnage added to the resource. - Positive factor: New measured tonnes added from 2022 sampling Evidence · text > An additional 801,600 tonnes of newly estimated Measured mineralization grading 0.60% of total rare earths \(" TREO "\) #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--a42e0292-e096-4707-b89c-86ea75f17321#fact-resource-facts-1) Bokan Dotson-Ridge · total rare earth oxides #### Identity - Project: Bokan Dotson-Ridge - Commodity: total rare earth oxides - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: James Robinson - Resource group id: resource:be00461e113c2fe3338d - Deposit or zone: Dotson Ridge #### Resource Data - Category: indicated - Tonnes: 3369800 - Grade: 0.58 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % TREO #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Standard indicated resource component. Evidence · table > 0.58 Context: 3,369,800 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--a42e0292-e096-4707-b89c-86ea75f17321#fact-resource-facts-2) Bokan Dotson-Ridge · total rare earth oxides #### Identity - Project: Bokan Dotson-Ridge - Commodity: total rare earth oxides - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: James Robinson - Resource group id: resource:2bc0b92c08b39e69c1d2 - Deposit or zone: Dotson Ridge #### Resource Data - Category: inferred - Tonnes: 980300 - Grade: 0.57 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % TREO #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Inferred resource component. Evidence · table > 0.57 Context: 980,300 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--a42e0292-e096-4707-b89c-86ea75f17321#fact-resource-facts-3) Bokan Dotson-Ridge · lanthanum oxide #### Identity - Project: Bokan Dotson-Ridge - Commodity: lanthanum oxide - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: James Robinson - Resource group id: resource:0d45acbda8b4e8fde381 - Deposit or zone: Dotson Ridge #### Resource Data - Category: measured - Tonnes: 801600 - Grade: 0.07 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Individual oxide component of measured resource. Evidence · table > 0.07 Context: MEASURED #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--a42e0292-e096-4707-b89c-86ea75f17321#fact-resource-facts-4) Bokan Dotson-Ridge · cerium oxide #### Identity - Project: Bokan Dotson-Ridge - Commodity: cerium oxide - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: James Robinson - Resource group id: resource:0d45acbda8b4e8fde381 - Deposit or zone: Dotson Ridge #### Resource Data - Category: measured - Tonnes: 801600 - Grade: 0.18 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Individual oxide component of measured resource. Evidence · table > 0.18 Context: MEASURED #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--a42e0292-e096-4707-b89c-86ea75f17321#fact-resource-facts-5) Bokan Dotson-Ridge · praseodymium oxide #### Identity - Project: Bokan Dotson-Ridge - Commodity: praseodymium oxide - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: James Robinson - Resource group id: resource:0d45acbda8b4e8fde381 - Deposit or zone: Dotson Ridge #### Resource Data - Category: measured - Tonnes: 801600 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Individual oxide component of measured resource. Evidence · table > 0.02 Context: MEASURED #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--a42e0292-e096-4707-b89c-86ea75f17321#fact-resource-facts-6) Bokan Dotson-Ridge · neodymium oxide #### Identity - Project: Bokan Dotson-Ridge - Commodity: neodymium oxide - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: James Robinson - Resource group id: resource:0d45acbda8b4e8fde381 - Deposit or zone: Dotson Ridge #### Resource Data - Category: measured - Tonnes: 801600 - Grade: 0.086 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Individual oxide component of measured resource. Evidence · table > 0.086 Context: MEASURED #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--a42e0292-e096-4707-b89c-86ea75f17321#fact-resource-facts-7) Bokan Dotson-Ridge · samarium oxide #### Identity - Project: Bokan Dotson-Ridge - Commodity: samarium oxide - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: James Robinson - Resource group id: resource:0d45acbda8b4e8fde381 - Deposit or zone: Dotson Ridge #### Resource Data - Category: measured - Tonnes: 801600 - Grade: 0.022 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Individual oxide component of measured resource. Evidence · table > 0.022 Context: MEASURED #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ## 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.