# Oroco Drills 26.48m of 1.18% CuEq in South Zone

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac

Original source: https://www.globenewswire.com/news-release/2026/08/06/3340169/0/en/oroco-drills-26-48m-of-1-18-cueq-in-south-zone.html

Publisher: globenewswire

Original announcement: 2026-08-06T00:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Oroco Resource Corp.

- Ticker: OCO

- Exchange: Unavailable

- Region: Sinaloa, Mexico

- Primary commodity: Copper

- Secondary commodities: Molybdenum, Gold, Silver

- Document categories: Drill results, Resource update

- Extracted: 2026-08-20 18:44:38 UTC

Narrative sentiment: 0.70 · Bullish

## Minestarters Atlas summary

Oroco Resource Corp. announced positive assay results from its Phase 2 resource drilling program at the Santo Tomás copper project in Sinaloa, Mexico, including 26.48m of 1.18% CuEq in hole S033. These results extend mineralization westward and define the southern limit of the South Zone, supporting the conversion of Inferred resources to the Indicated category for an upcoming Pre-Feasibility Study. The company continues drilling with three rigs on site.

Reasoning: New drill results confirm and extend mineralization beyond current resource limits, supporting the conversion of Inferred to Indicated resources, with a notable high-grade intercept. However, true widths are not yet confirmed, and the copper equivalent calculation is not directly comparable to previous estimates.

- Positive factor: Extension of mineralization

- Positive factor: Support for resource conversion

- Positive factor: High-grade intercept

- Negative factor: Apparent width only

- Negative factor: Metal equivalent comparability issues

Low confidence — this extraction should be reviewed alongside the original source.

Facts used in scoring: 62

## Classification and evidence

**Bonanza Intercept**

Polarity: positive

Definition: Exceptionally high-grade zone, well above the deposit-type norm.

Why it applies: The intercept of 26.48m at 1.18% CuEq in hole S033 exceeds the exceptional grade threshold \(0.8% CuEq\) for porphyry copper deposits.

Evidence · text

> 26.48m @ 0.90% Cu / 1.18% CuEq\* from a depth of 48.0m

**Apparent Width Only**

Polarity: negative

Definition: Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness.

Why it applies: The document explicitly states that true widths will be confirmed later and are not yet available.

Evidence · text

> True widths will be confirmed when Phase 2 results are incorporated into the updated geological and resource models.

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: The release details QA/QC protocols including certified reference standards, blanks, and duplicates, and names ALS Chemex as the laboratory.

Evidence · text

> Geological logging, core sampling, sample preparation, analysis, and chain of custody are governed by QA/QC protocols that include the insertion of certified reference standards, blanks, and duplicates. Samples are submitted to ALS Chemex \(Hermosillo, Mexico\) for sample preparation

**Compositing Transparent**

Polarity: positive

Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: The criteria for significant intervals, including cut-off grade and internal dilution rules, are clearly stated.

Evidence · text

> Significant Intervals comprise intervals ≥ 10m of ≥ 0.15% Cu, but may include assay intervals of ≤ 4m of ≥ 0.05% Cu.

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: Hole S033 is described as an infill hole, indicating its purpose is to increase resource confidence.

Evidence · table

> Infill hole to the east of S034.

Context: S033

**Step-Out Extension**

Polarity: positive

Definition: Mineralization extended beyond the previously known limit.

Why it applies: Holes S031 and S034 confirmed the local westward extension of mineralization beyond the current inferred block model limits.

Evidence · text

> Holes S031 and S034 confirmed the local westward extension of mineralization beyond the current inferred block model limits in the central western portion of the South Zone.

**Resource Update**

Polarity: neutral

Definition: Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: The Phase 2 drilling program is designed primarily to convert Inferred resources to the Indicated resource classification.

Evidence · text

> Phase 2 is designed primarily to convert Inferred resources to the Indicated resource classification in the South Zone

## Extracted facts

Stored fact records: 62. Some facts used in scoring do not have a stored record.

## Drill Results (62)

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-0)

Santo Tomás · copper

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.47
- Grade Unit: %
- Intercept: 28.32 m
- From: 13.5 m
- To: 41.82 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S027:13.5-41.82
- Mining Method: open\_pit

#### Location

- Easting: 779299
- Northing: 2974324
- Elevation: 721 m
- Azimuth: 0 °
- Dip: -90 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Moderate copper grade of 0.47% over 28.32m, supporting resource definition, but without a copper equivalent grade due to mixed oxide/sulphide mineralization.

- Negative factor: Apparent width only

- Negative factor: Metal equivalent not reported for oxide zone

Evidence · table

> 0.47

Context: 28.32

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-1)

Santo Tomás · copper

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.63
- Grade Unit: % CuEq
- Intercept: 22 m
- From: 48 m
- To: 70 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S027:48-70
- Mining Method: open\_pit

#### Location

- Easting: 779299
- Northing: 2974324
- Elevation: 721 m
- Azimuth: 0 °
- Dip: -90 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.63
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Strong copper equivalent grade of 0.63% over 22m, approaching the exceptional threshold for porphyry copper deposits, supporting resource definition.

- Positive factor: Strong grade

- Negative factor: Apparent width only

Evidence · table

> 0.63

Context: 22

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-2)

Santo Tomás · copper

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.34
- Grade Unit: % CuEq
- Intercept: 19 m
- From: 76 m
- To: 95 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S027:76-95
- Mining Method: open\_pit

#### Location

- Easting: 779299
- Northing: 2974324
- Elevation: 721 m
- Azimuth: 0 °
- Dip: -90 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.34
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Moderate copper equivalent grade of 0.34% over 19m, supporting resource definition.

- Negative factor: Apparent width only

Evidence · table

> 0.34

Context: 19

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-3)

Santo Tomás · copper

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.41
- Grade Unit: % CuEq
- Intercept: 14.5 m
- From: 96 m
- To: 110.5 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S027:96-110.5
- Mining Method: open\_pit

#### Location

- Easting: 779299
- Northing: 2974324
- Elevation: 721 m
- Azimuth: 0 °
- Dip: -90 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.41
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Strong copper equivalent grade of 0.41% over 14.5m, supporting resource definition.

- Positive factor: Strong grade

- Negative factor: Apparent width only

Evidence · table

> 0.41

Context: 14.5

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-4)

Santo Tomás · copper

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.38
- Grade Unit: % CuEq
- Intercept: 29.5 m
- From: 172.5 m
- To: 202 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S027:172.5-202
- Mining Method: open\_pit

#### Location

- Easting: 779299
- Northing: 2974324
- Elevation: 721 m
- Azimuth: 0 °
- Dip: -90 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.38
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Moderate copper equivalent grade of 0.38% over 29.5m, supporting resource definition.

- Negative factor: Apparent width only

Evidence · table

> 0.38

Context: 29.5

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-5)

Santo Tomás · copper

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.8
- Grade Unit: %
- Intercept: 49 m
- From: 12 m
- To: 61 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S030:12-61
- Mining Method: open\_pit

#### Location

- Easting: 779298
- Northing: 2974325
- Elevation: 721 m
- Azimuth: 280 °
- Dip: -50 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Exceptional copper grade of 0.80% over 49m, meeting the exceptional threshold for porphyry copper deposits, supporting resource definition, but without a copper equivalent grade due to mixed oxide/sulphide mineralization.

- Positive factor: Exceptional grade

- Negative factor: Apparent width only

- Negative factor: Metal equivalent not reported for oxide zone

Evidence · table

> 0.80

Context: 49

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-6)

Santo Tomás · copper

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.29
- Grade Unit: % CuEq
- Intercept: 18 m
- From: 129 m
- To: 147 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S030:129-147
- Mining Method: open\_pit

#### Location

- Easting: 779298
- Northing: 2974325
- Elevation: 721 m
- Azimuth: 280 °
- Dip: -50 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.29
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Moderate copper equivalent grade of 0.29% over 18m, supporting resource definition.

- Negative factor: Apparent width only

Evidence · table

> 0.29

Context: 18

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-7)

Santo Tomás · copper

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.44
- Grade Unit: % CuEq
- Intercept: 24 m
- From: 153 m
- To: 177 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S030:153-177
- Mining Method: open\_pit

#### Location

- Easting: 779298
- Northing: 2974325
- Elevation: 721 m
- Azimuth: 280 °
- Dip: -50 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.44
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Strong copper equivalent grade of 0.44% over 24m, supporting resource definition.

- Positive factor: Strong grade

- Negative factor: Apparent width only

Evidence · table

> 0.44

Context: 24

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-8)

Santo Tomás · copper

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.4
- Grade Unit: % CuEq
- Intercept: 19.1 m
- From: 182 m
- To: 201 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S030:182-201
- Mining Method: open\_pit

#### Location

- Easting: 779298
- Northing: 2974325
- Elevation: 721 m
- Azimuth: 280 °
- Dip: -50 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.4
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Strong copper equivalent grade of 0.40% over 19.1m, supporting resource definition.

- Positive factor: Strong grade

- Negative factor: Apparent width only

Evidence · table

> 0.40

Context: 19.1

### S031

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-9)

Santo Tomás · copper

#### Identity

- Hole ID: S031
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.37
- Grade Unit: % CuEq
- Intercept: 76.3 m
- From: 26.7 m
- To: 103 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S031:26.7-103
- Mining Method: open\_pit

#### Location

- Easting: 778627
- Northing: 2975566
- Elevation: 589 m
- Azimuth: 270 °
- Dip: -65 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.37
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Moderate copper equivalent grade of 0.37% over a significant width of 76.3m, representing a step-out extension of mineralization beyond current inferred limits.

- Positive factor: Step-Out Extension

- Positive factor: Good grade-thickness product

- Negative factor: Apparent width only

Evidence · table

> 0.37

Context: 76.3

### S032

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-10)

Santo Tomás · copper

#### Identity

- Hole ID: S032
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.67
- Grade Unit: %
- Intercept: 17 m
- From: 32 m
- To: 49 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S032:32-49
- Mining Method: open\_pit

#### Location

- Easting: 779300
- Northing: 2974232
- Elevation: 721 m
- Azimuth: 150 °
- Dip: -45 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Strong copper grade of 0.67% over 17m, supporting resource definition, but without a copper equivalent grade due to mixed oxide/sulphide mineralization.

- Positive factor: Strong grade

- Negative factor: Apparent width only

- Negative factor: Metal equivalent not reported for oxide zone

Evidence · table

> 0.67

Context: 17

### S032

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-11)

Santo Tomás · copper

#### Identity

- Hole ID: S032
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.38
- Grade Unit: % CuEq
- Intercept: 27 m
- From: 49 m
- To: 76 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S032:49-76
- Mining Method: open\_pit

#### Location

- Easting: 779300
- Northing: 2974232
- Elevation: 721 m
- Azimuth: 150 °
- Dip: -45 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.38
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Moderate copper equivalent grade of 0.38% over 27m, supporting resource definition.

- Negative factor: Apparent width only

Evidence · table

> 0.38

Context: 27

### S032

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-12)

Santo Tomás · copper

#### Identity

- Hole ID: S032
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.35
- Grade Unit: % CuEq
- Intercept: 27.5 m
- From: 82 m
- To: 109.5 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S032:82-109.5
- Mining Method: open\_pit

#### Location

- Easting: 779300
- Northing: 2974232
- Elevation: 721 m
- Azimuth: 150 °
- Dip: -45 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.35
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Moderate copper equivalent grade of 0.35% over 27.5m, supporting resource definition.

- Negative factor: Apparent width only

Evidence · table

> 0.35

Context: 27.5

### S033

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-13)

Santo Tomás · copper

#### Identity

- Hole ID: S033
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.54
- Grade Unit: % CuEq
- Intercept: 114.7 m
- From: 35.3 m
- To: 150 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S033:35.3-150
- Mining Method: open\_pit

#### Location

- Easting: 778704
- Northing: 2975645
- Elevation: 598 m
- Azimuth: 100 °
- Dip: -50 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.54
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Strong copper equivalent grade of 0.54% over a significant width of 114.7m, supporting infill drilling objectives and resource definition.

- Positive factor: Strong grade

- Positive factor: Good grade-thickness product

- Positive factor: Infill Drilling

- Negative factor: Apparent width only

Evidence · table

> 0.54

Context: 114.7

### S033

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-14)

Santo Tomás · copper

#### Identity

- Hole ID: S033
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.66
- Grade Unit: % CuEq
- Intercept: 73.7 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Mining Method: open\_pit

#### Location

- Easting: 778704
- Northing: 2975645
- Elevation: 598 m
- Azimuth: 100 °
- Dip: -50 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.66
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Strong copper equivalent grade of 0.66% over 73.7m, approaching the exceptional threshold for porphyry copper deposits, supporting infill drilling objectives and resource definition.

- Positive factor: Strong grade

- Positive factor: Good grade-thickness product

- Positive factor: Infill Drilling

- Negative factor: Apparent width only

Evidence · table

> 0.66

Context: 73.7

### S033

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-15)

Santo Tomás · copper

#### Identity

- Hole ID: S033
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 1.18
- Grade Unit: % CuEq
- Intercept: 26.48 m
- From: 48 m
- To: 74.48 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S033:48-74.48
- Mining Method: open\_pit

#### Location

- Easting: 778704
- Northing: 2975645
- Elevation: 598 m
- Azimuth: 100 °
- Dip: -50 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 1.18
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Exceptional copper equivalent grade of 1.18% over 26.48m, significantly exceeding the exceptional threshold for porphyry copper deposits, representing a bonanza intercept and supporting infill drilling objectives.

- Positive factor: Bonanza Intercept

- Positive factor: Exceptional grade

- Positive factor: Good grade-thickness product

- Positive factor: Infill Drilling

- Negative factor: Apparent width only

Evidence · table

> 1.18

Context: 26.48

### S034

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-16)

Santo Tomás · copper

#### Identity

- Hole ID: S034
- Project: Santo Tomás
- Commodity: copper
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.39
- Grade Unit: % CuEq
- Intercept: 103 m
- From: 42 m
- To: 145 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: S034:42-145
- Mining Method: open\_pit

#### Location

- Easting: 778656
- Northing: 2975640
- Elevation: 587 m
- Azimuth: 270 °
- Dip: -60 °
- Loc. Confidence: high

#### QA/QC

- Laboratory: ALS
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: blanks, standards, duplicates

#### Deleterious

- Deleterious Flag: No

#### Metal Equivalent

- Metal Eq. Grade: 0.39
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.15
- Cutoff Unit: %
- Dilution Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Moderate copper equivalent grade of 0.39% over a significant width of 103m, representing a step-out extension of mineralization beyond current inferred limits.

- Positive factor: Step-Out Extension

- Positive factor: Good grade-thickness product

- Negative factor: Apparent width only

Evidence · table

> 0.39

Context: 103

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-17)

Santo Tomás · mo

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.011
- Grade Unit: %
- Intercept: 28.32 m
- From: 13.5 m
- To: 41.82 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:13.5-41.82
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.011 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.011

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-18)

Santo Tomás · gold

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.015
- Grade Unit: g/t
- Intercept: 28.32 m
- From: 13.5 m
- To: 41.82 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:13.5-41.82
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.015 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 0.4 g/t·m is below.

- Negative factor: 0.015 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.015

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-19)

Santo Tomás · silver

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 3.22
- Grade Unit: g/t
- Intercept: 28.32 m
- From: 13.5 m
- To: 41.82 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:13.5-41.82
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 3.22 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 91.2 g/t·m is below.

- Negative factor: 3.22 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

> 3.22

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-20)

Santo Tomás · mo

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.023
- Grade Unit: %
- Intercept: 22 m
- From: 48 m
- To: 70 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:48-70
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.023 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.023

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-21)

Santo Tomás · gold

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.014
- Grade Unit: g/t
- Intercept: 22 m
- From: 48 m
- To: 70 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:48-70
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.014 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 0.3 g/t·m is below.

- Negative factor: 0.014 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.014

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-22)

Santo Tomás · silver

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 3.41
- Grade Unit: g/t
- Intercept: 22 m
- From: 48 m
- To: 70 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:48-70
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 3.41 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 75.0 g/t·m is below.

- Negative factor: 3.41 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

> 3.41

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-23)

Santo Tomás · mo

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.015
- Grade Unit: %
- Intercept: 19 m
- From: 76 m
- To: 95 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:76-95
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.015 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.015

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-24)

Santo Tomás · gold

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.007
- Grade Unit: g/t
- Intercept: 19 m
- From: 76 m
- To: 95 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:76-95
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.007 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 0.1 g/t·m is below.

- Negative factor: 0.007 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.007

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-25)

Santo Tomás · silver

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 1.86
- Grade Unit: g/t
- Intercept: 19 m
- From: 76 m
- To: 95 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:76-95
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 1.86 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 35.3 g/t·m is below.

- Negative factor: 1.86 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

> 1.86

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-26)

Santo Tomás · mo

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.011
- Grade Unit: %
- Intercept: 14.5 m
- From: 96 m
- To: 110.5 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:96-110.5
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.011 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.011

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-27)

Santo Tomás · gold

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.019
- Grade Unit: g/t
- Intercept: 14.5 m
- From: 96 m
- To: 110.5 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:96-110.5
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.019 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 0.3 g/t·m is below.

- Negative factor: 0.019 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.019

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-28)

Santo Tomás · silver

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 2.32
- Grade Unit: g/t
- Intercept: 14.5 m
- From: 96 m
- To: 110.5 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:96-110.5
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 2.32 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 33.6 g/t·m is below.

- Negative factor: 2.32 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

> 2.32

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-29)

Santo Tomás · mo

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.007
- Grade Unit: %
- Intercept: 29.5 m
- From: 172.5 m
- To: 202 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:172.5-202
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.007 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.007

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-30)

Santo Tomás · gold

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.023
- Grade Unit: g/t
- Intercept: 29.5 m
- From: 172.5 m
- To: 202 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:172.5-202
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.023 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 0.7 g/t·m is below.

- Negative factor: 0.023 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.023

Context: S027

### S027

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-31)

Santo Tomás · silver

#### Identity

- Hole ID: S027
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 4.1
- Grade Unit: g/t
- Intercept: 29.5 m
- From: 172.5 m
- To: 202 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S027:172.5-202
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 4.1 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 120.9 g/t·m is below.

- Negative factor: 4.1 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

> 4.10

Context: S027

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-32)

Santo Tomás · mo

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.023
- Grade Unit: %
- Intercept: 49 m
- From: 12 m
- To: 61 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S030:12-61
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.023 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.023

Context: S030

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-33)

Santo Tomás · gold

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.032
- Grade Unit: g/t
- Intercept: 49 m
- From: 12 m
- To: 61 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S030:12-61
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.032 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 1.6 g/t·m is below.

- Negative factor: 0.032 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.032

Context: S030

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-34)

Santo Tomás · silver

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.79
- Grade Unit: g/t
- Intercept: 49 m
- From: 12 m
- To: 61 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S030:12-61
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.79 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 38.7 g/t·m is below.

- Negative factor: 0.79 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

> 0.79

Context: S030

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-35)

Santo Tomás · mo

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.018
- Grade Unit: %
- Intercept: 18 m
- From: 129 m
- To: 147 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S030:129-147
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.018 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.018

Context: S030

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-36)

Santo Tomás · gold

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.021
- Grade Unit: g/t
- Intercept: 18 m
- From: 129 m
- To: 147 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S030:129-147
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.021 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 0.4 g/t·m is below.

- Negative factor: 0.021 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.021

Context: S030

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-37)

Santo Tomás · silver

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 1.44
- Grade Unit: g/t
- Intercept: 18 m
- From: 129 m
- To: 147 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S030:129-147
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 1.44 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 25.9 g/t·m is below.

- Negative factor: 1.44 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

> 1.44

Context: S030

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-38)

Santo Tomás · mo

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.031
- Grade Unit: %
- Intercept: 24 m
- From: 153 m
- To: 177 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S030:153-177
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.031 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.031

Context: S030

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-39)

Santo Tomás · gold

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.013
- Grade Unit: g/t
- Intercept: 24 m
- From: 153 m
- To: 177 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S030:153-177
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.013 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 0.3 g/t·m is below.

- Negative factor: 0.013 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.013

Context: S030

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-40)

Santo Tomás · silver

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 2.55
- Grade Unit: g/t
- Intercept: 24 m
- From: 153 m
- To: 177 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S030:153-177
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 2.55 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 61.2 g/t·m is below.

- Negative factor: 2.55 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

> 2.55

Context: S030

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-41)

Santo Tomás · mo

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.049
- Grade Unit: %
- Intercept: 19.1 m
- From: 182 m
- To: 201 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S030:182-201
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.049 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.049

Context: S030

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-42)

Santo Tomás · gold

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.015
- Grade Unit: g/t
- Intercept: 19.1 m
- From: 182 m
- To: 201 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S030:182-201
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.015 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 0.3 g/t·m is below.

- Negative factor: 0.015 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.015

Context: S030

### S030

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-43)

Santo Tomás · silver

#### Identity

- Hole ID: S030
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 1
- Grade Unit: g/t
- Intercept: 19.1 m
- From: 182 m
- To: 201 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S030:182-201
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 1 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 19.1 g/t·m is below.

- Negative factor: 1 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

> 1.00

Context: S030

### S031

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-44)

Santo Tomás · mo

#### Identity

- Hole ID: S031
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.012
- Grade Unit: %
- Intercept: 76.3 m
- From: 26.7 m
- To: 103 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S031:26.7-103
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.012 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.012

Context: S031

### S031

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-45)

Santo Tomás · gold

#### Identity

- Hole ID: S031
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.008
- Grade Unit: g/t
- Intercept: 76.3 m
- From: 26.7 m
- To: 103 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S031:26.7-103
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.008 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 0.6 g/t·m is below.

- Negative factor: 0.008 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.008

Context: S031

### S031

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-46)

Santo Tomás · silver

#### Identity

- Hole ID: S031
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 2.49
- Grade Unit: g/t
- Intercept: 76.3 m
- From: 26.7 m
- To: 103 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S031:26.7-103
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 2.49 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 190.0 g/t·m is below.

- Negative factor: 2.49 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

> 2.49

Context: S031

### S032

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-47)

Santo Tomás · mo

#### Identity

- Hole ID: S032
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 17 m
- From: 32 m
- To: 49 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S032:32-49
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.01 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.010

Context: S032

### S032

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-48)

Santo Tomás · gold

#### Identity

- Hole ID: S032
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.013
- Grade Unit: g/t
- Intercept: 17 m
- From: 32 m
- To: 49 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S032:32-49
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.013 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 0.2 g/t·m is below.

- Negative factor: 0.013 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.013

Context: S032

### S032

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-49)

Santo Tomás · silver

#### Identity

- Hole ID: S032
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 2.98
- Grade Unit: g/t
- Intercept: 17 m
- From: 32 m
- To: 49 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S032:32-49
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 2.98 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 50.7 g/t·m is below.

- Negative factor: 2.98 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

> 2.98

Context: S032

### S032

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-50)

Santo Tomás · mo

#### Identity

- Hole ID: S032
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.009
- Grade Unit: %
- Intercept: 27 m
- From: 49 m
- To: 76 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S032:49-76
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.009 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.009

Context: S032

### S032

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-51)

Santo Tomás · gold

#### Identity

- Hole ID: S032
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.007
- Grade Unit: g/t
- Intercept: 27 m
- From: 49 m
- To: 76 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S032:49-76
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.007 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 0.2 g/t·m is below.

- Negative factor: 0.007 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.007

Context: S032

### S032

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-52)

Santo Tomás · silver

#### Identity

- Hole ID: S032
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 2.16
- Grade Unit: g/t
- Intercept: 27 m
- From: 49 m
- To: 76 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S032:49-76
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 2.16 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 58.3 g/t·m is below.

- Negative factor: 2.16 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

> 2.16

Context: S032

### S032

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-53)

Santo Tomás · mo

#### Identity

- Hole ID: S032
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.005
- Grade Unit: %
- Intercept: 27.5 m
- From: 82 m
- To: 109.5 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S032:82-109.5
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.005 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.005

Context: S032

### S032

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-54)

Santo Tomás · gold

#### Identity

- Hole ID: S032
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.007
- Grade Unit: g/t
- Intercept: 27.5 m
- From: 82 m
- To: 109.5 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S032:82-109.5
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.007 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 0.2 g/t·m is below.

- Negative factor: 0.007 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.007

Context: S032

### S032

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-55)

Santo Tomás · silver

#### Identity

- Hole ID: S032
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 1.55
- Grade Unit: g/t
- Intercept: 27.5 m
- From: 82 m
- To: 109.5 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S032:82-109.5
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 1.55 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 42.6 g/t·m is below.

- Negative factor: 1.55 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

> 1.55

Context: S032

### S033

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-56)

Santo Tomás · mo

#### Identity

- Hole ID: S033
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.004
- Grade Unit: %
- Intercept: 114.7 m
- From: 35.3 m
- To: 150 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S033:35.3-150
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.004 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.004

Context: S033

### S033

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-57)

Santo Tomás · gold

#### Identity

- Hole ID: S033
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.045
- Grade Unit: g/t
- Intercept: 114.7 m
- From: 35.3 m
- To: 150 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S033:35.3-150
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.045 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 5.2 g/t·m is below.

- Negative factor: 0.045 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.045

Context: S033

### S033

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-58)

Santo Tomás · silver

#### Identity

- Hole ID: S033
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 2.49
- Grade Unit: g/t
- Intercept: 114.7 m
- From: 35.3 m
- To: 150 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S033:35.3-150
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 2.49 g/t silver is weak against the default band \[500, 200, 100, 30\] g/t. Grade×width 285.6 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

> 2.49

Context: S033

### S034

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-59)

Santo Tomás · mo

#### Identity

- Hole ID: S034
- Project: Santo Tomás
- Commodity: mo
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.011
- Grade Unit: %
- Intercept: 103 m
- From: 42 m
- To: 145 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S034:42-145
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table: 0.011 % mo. No grade band defined for this commodity, so the score is a placeholder.

- Negative factor: No grade rubric for mo; intercept not scored.

Evidence · table

> 0.011

Context: S034

### S034

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-60)

Santo Tomás · gold

#### Identity

- Hole ID: S034
- Project: Santo Tomás
- Commodity: gold
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 0.011
- Grade Unit: g/t
- Intercept: 103 m
- From: 42 m
- To: 145 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S034:42-145
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 0.011 g/t gold is below against the porphyry deposit band \[1, 0.5, 0.3, 0.15\] g/t. Grade×width 1.1 g/t·m is below.

- Negative factor: 0.011 g/t gold is below the weak threshold \(0.15 g/t\) on the porphyry deposit band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.011

Context: S034

### S034

[Link to this fact](https://atlas-staging.minestarters.com/news/oroco-drills-26-48m-of-1-18-cueq-in-south-zone--e004b33b-2a8b-43a8-a6e6-f3e1330818ac#fact-drill-facts-61)

Santo Tomás · silver

#### Identity

- Hole ID: S034
- Project: Santo Tomás
- Commodity: silver
- Region: mexico
- Reported Region: Sinaloa, Mexico
- Ticker: OCO

#### Geometry

- Grade: 2.789
- Grade Unit: g/t
- Intercept: 103 m
- From: 42 m
- To: 145 m

#### Classification

- Deposit Type: porphyry
- Sample Type: drill
- Group ID: S034:42-145
- Mining Method: open\_pit

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-08-06T00:00:00.000Z

Reasoning: Expanded from assay table. 2.789 g/t silver is weak against the default band \[500, 200, 100, 30\] g/t. Grade×width 287.3 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

> 2.789

Context: S034

## 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.