# FURTHER POSITIVE ASSAY RESULTS FROM ROSKEAR DRILLING PROGRAMME INCLUDING DISCOVERED HIGH-GRADE TUNGSTEN AND COPPER ZONES

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297

Original source: https://www.londonstockexchange.com/news-article/TIN/further-positive-assay-results-from-roskear-drilling-programme-including-discovered-high-grade-tungs/17814113

Publisher: lse

Original announcement: 2026-10-01T05:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: 2026-10-01T07:08:44.913Z

Atlas analysis updated: 2026-10-01T07:08:44.913Z

- Company: Cornish Metals plc

- Ticker: TIN

- Exchange: LSE

- Region: Cornwall, United Kingdom

- Primary commodity: Tungsten

- Secondary commodities: Tin, Copper, Zinc

- Document categories: Drill results

- Extracted: 2026-10-01 07:08:45 UTC

Narrative sentiment: 0.90 · Bullish

## Minestarters Atlas summary

Cornish Metals plc announced highly positive assay results from its 2026 surface drilling program at the Roskear area of the South Crofty tin project in Cornwall, UK. The program successfully extended known tin mineralization, with some high-grade intercepts exceeding previous bests, and notably discovered new high-grade tungsten and copper zones. These new discoveries, particularly of critical mineral tungsten, significantly enhance the project's exploration potential and provide confidence for expanding the Mineral Resource to the west.

Reasoning: The drill program successfully discovered significant new high-grade tungsten and copper zones, which are critical minerals, and extended known tin mineralization, adding substantial exploration potential to the South Crofty project. The high grades and new discoveries are highly positive, although true widths and full economic implications for the new metals are yet to be determined.

- Positive factor: Discovery of new high-grade tungsten zone, including 0.52m at 15.15% W, a critical mineral with strong market dynamics.

- Positive factor: Discovery of high-grade copper and zinc zones, including 0.62m at 6.59% Cu.

- Positive factor: Extension of known tin mineralization \(Roskear B\) approximately 91m west of prior intercept, expanding resource potential.

- Positive factor: High-grade tin intercepts, including 0.33m at 5.71% Sn, exceeding prior best grade of 4.18% Sn.

- Positive factor: Identification of several previously unmodelled tin-bearing structures, adding to exploration targets.

- Positive factor: QA/QC procedures disclosed and Qualified Person signed off, ensuring data reliability.

- Negative factor: True intersection widths have not yet been calculated, potentially overstating apparent widths.

- Negative factor: Tungsten and copper are new discoveries and their economic impact is still being evaluated, introducing uncertainty despite high grades.

- Negative factor: Cut-off grades for compositing are not disclosed, limiting transparency.

Facts used in scoring: 32

## Classification and evidence

**Bonanza Intercept**

Polarity: positive

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

Why it applies: The intercept of 0.33m at 5.71% Sn is an exceptionally high-grade zone for tin, exceeding the prior best grade of 4.18% Sn.

Evidence · table

> 5.71

Context: 0.33

**Bonanza Intercept**

Polarity: positive

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

Why it applies: The intercept of 0.52m at 15.15% W is an exceptionally high-grade zone for tungsten, described as 'not often seen in tungsten exploration'.

Evidence · table

> 15.15% W

Context: 0.52

**Bonanza Intercept**

Polarity: positive

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

Why it applies: The intercept of 0.62m at 6.59% Cu is an exceptionally high-grade zone for copper.

Evidence · table

> 6.59% Cu

Context: 0.62

**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 intersection widths have not yet been calculated' for the reported intervals.

Evidence · table

> True intersection widths have not yet been calculated.

Context: Note 1: Composited values use a downhole length weighted average of grade. True intersection widths have not yet been calculated. Note 2: Tungsten grades are reported as % W \(tungsten metal\). Tungsten trioxide equivalent may be calculated as % WO₃ = % W × 1.2610. Note 3: Lodes described as “Newly Discovered” are structures intersected by drilling that were not previously included in the Company’s geological model.

**Step-Out Extension**

Polarity: positive

Definition: Mineralization extended beyond the previously known limit.

Why it applies: Mineralization is confirmed extending west with Roskear B intersected approximately 91m west of the SDD26\_001A intercept, indicating an extension beyond the previously known limit.

Evidence · text

> Mineralisation confirmed extending west with Roskear B intersected approximately 91m west of the SDD26\_001A intercept

**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 includes QA/QC disclosure, mentioning the use of coarse blanks, certified reference materials, and field duplicates, and that ALS Laboratory's quality management system meets ISO/IEC 17025:2017 and ISO 9001:2015 standards.

Evidence · text

> For quality assurance \(“QA”\), coarse blanks, certified reference materials and field duplicates were inserted into the sample sequence, amounting to approximately 15% of the total sample quantity. Samples were assayed using ALS method ME-XRF15b, where samples are analysed by XRF following a lithium borate fusion. ALS Laboratories quality management system includes inter-laboratory test programmes and regularly scheduled internal audits that meet all requirements of ISO/IEC 17025:2017 and ISO 9001:2015.

**QP/CP Signed**

Polarity: positive

Story-specific tag

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: The news release has been reviewed and approved by Mr Stephen Holley, who is the designated Qualified Person for the Company and a Qualified Person as defined by the AIM Rules for Companies.

Evidence · text

> This news release has been reviewed and approved by Mr Stephen Holley, \(BSc \(Hons\), ACSM, MSc, MSCM, CEng FIMMM\), Technical Services Manager for Cornish Metals plc, who is the designated Qualified Person for the Company and a Qualified Person as defined by the AIM Rules for Companies.

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: The release does not state the cut-off grade used for compositing the reported intervals.

Evidence · text

> Note 1: Composited values use a downhole length weighted average of grade. True intersection widths have not yet been calculated.

**Newly Discovered**

Polarity: positive

Story-specific tag

Definition: No canonical definition is currently available.

Why it applies: The document explicitly states that 'Lodes described as “Newly Discovered” are structures intersected by drilling that were not previously included in the Company’s geological model', and several intercepts are from such lodes.

Evidence · table

> Lodes described as “Newly Discovered” are structures intersected by drilling that were not previously included in the Company’s geological model.

Context: Note 1: Composited values use a downhole length weighted average of grade. True intersection widths have not yet been calculated. Note 2: Tungsten grades are reported as % W \(tungsten metal\). Tungsten trioxide equivalent may be calculated as % WO₃ = % W × 1.2610. Note 3: Lodes described as “Newly Discovered” are structures intersected by drilling that were not previously included in the Company’s geological model.

**Critical Mineral**

Polarity: positive

Story-specific tag

Definition: No canonical definition is currently available.

Why it applies: Tungsten is explicitly designated as a critical mineral by the UK, EU, and USA, and its market dynamics are highlighted.

Evidence · text

> Tungsten is designated a critical mineral in the UK, EU and USA

## Extracted facts

Stored fact records: 32. Some facts used in scoring do not have a stored record.

## Drill Results (32)

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-0)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.53
- Grade Unit: %
- Intercept: 0.58 m
- From: 409.27 m
- To: 409.85 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:409.27-409.85
- Mining Method: underground

#### Location

- Location: A. Newly Discovered
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A narrow tin intercept from a newly discovered structure, contributing to the overall exploration potential.

- Positive factor: Intercept is from a newly discovered structure, adding to exploration potential.

- Negative factor: Narrow intercept length \(0.58m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.53

Context: 0.58

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-1)

South Crofty · copper

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: copper
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 1.85
- Grade Unit: %
- Intercept: 0.58 m
- From: 409.27 m
- To: 409.85 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:409.27-409.85
- Mining Method: underground

#### Location

- Location: A. Newly Discovered
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A high-grade copper intercept from a newly discovered structure, representing a significant new opportunity for the project.

- Positive factor: High-grade copper intercept \(1.85% Cu\) from a newly discovered structure.

- Positive factor: Discovery of new copper mineralization adds to project potential.

- Negative factor: Narrow intercept length \(0.58m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 1.85% Cu and 14.20% Zn

Context: 0.58

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-2)

South Crofty · zinc

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: zinc
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 14.2
- Grade Unit: %
- Intercept: 0.58 m
- From: 409.27 m
- To: 409.85 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:409.27-409.85
- Mining Method: underground

#### Location

- Location: A. Newly Discovered
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A high-grade zinc intercept from a newly discovered structure, representing a significant new opportunity for the project.

- Positive factor: High-grade zinc intercept \(14.20% Zn\) from a newly discovered structure.

- Positive factor: Discovery of new zinc mineralization adds to project potential.

- Negative factor: Narrow intercept length \(0.58m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 1.85% Cu and 14.20% Zn

Context: 0.58

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-3)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.26
- Grade Unit: %
- Intercept: 0.62 m
- From: 671.69 m
- To: 672.31 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:671.69-672.31
- Mining Method: underground

#### Location

- Location: B. Newly Discovered
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A narrow, low-grade tin intercept from a newly discovered structure, contributing to the overall exploration potential.

- Positive factor: Intercept is from a newly discovered structure, adding to exploration potential.

- Negative factor: Narrow intercept length \(0.62m\).

- Negative factor: Low tin grade \(0.26% Sn\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.26

Context: 0.62

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-4)

South Crofty · copper

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: copper
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 6.59
- Grade Unit: %
- Intercept: 0.62 m
- From: 671.69 m
- To: 672.31 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:671.69-672.31
- Mining Method: underground

#### Location

- Location: B. Newly Discovered
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: An exceptionally high-grade copper intercept from a newly discovered structure, representing a highly significant new opportunity for the project.

- Positive factor: Exceptional high-grade copper intercept \(6.59% Cu\) from a newly discovered structure.

- Positive factor: Discovery of new copper mineralization adds significant project potential.

- Negative factor: Narrow intercept length \(0.62m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 6.59% Cu

Context: 0.62

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-5)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 1.46
- Grade Unit: %
- Intercept: 1.51 m
- From: 757.66 m
- To: 759.17 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:757.66-759.17
- Mining Method: underground

#### Location

- Location: C. Roskear South
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A moderate grade tin intercept confirming mineralization in the Roskear South area.

- Positive factor: Moderate grade tin intercept \(1.46% Sn\) over a reasonable width \(1.51m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 1.46

Context: 1.51

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-6)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 5.71
- Grade Unit: %
- Intercept: 0.33 m
- From: 757.66 m
- To: 757.99 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:757.66-757.99
- Mining Method: underground

#### Location

- Location: C. Roskear South
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A very high-grade tin intercept, indicating bonanza-grade mineralization within a narrow zone, exceeding previous best grades.

- Positive factor: Bonanza grade tin intercept \(5.71% Sn\), exceeding the prior best grade of 4.18% Sn.

- Positive factor: Confirms high-grade potential within the Roskear South area.

- Negative factor: Very narrow intercept length \(0.33m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 5.71

Context: 0.33

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-7)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.02
- Grade Unit: %
- Intercept: 0.28 m
- From: 822.69 m
- To: 822.97 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:822.69-822.97
- Mining Method: underground

#### Location

- Location: D. Roskear Numbered Lode
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A very narrow and low-grade tin intercept, indicating minimal tin mineralization in this zone.

- Negative factor: Very low tin grade \(0.02% Sn\).

- Negative factor: Very narrow intercept length \(0.28m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.02

Context: 0.28

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-8)

South Crofty · tungsten

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tungsten
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 2.23
- Grade Unit: %
- Intercept: 0.28 m
- From: 822.69 m
- To: 822.97 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:822.69-822.97
- Mining Method: underground

#### Location

- Location: D. Roskear Numbered Lode
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A high-grade tungsten intercept, indicating new tungsten mineralization in the Roskear Numbered Lode.

- Positive factor: High-grade tungsten intercept \(2.23% W\) from a newly identified zone.

- Negative factor: Very narrow intercept length \(0.28m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 2.23% W

Context: 0.28

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-9)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.5
- Grade Unit: %
- Intercept: 0.33 m
- From: 871.2 m
- To: 871.53 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:871.2-871.53
- Mining Method: underground

#### Location

- Location: E. Roskear 3 North
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A narrow tin intercept in the Roskear 3 North area, contributing to the overall understanding of mineralization.

- Negative factor: Narrow intercept length \(0.33m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.50

Context: 0.33

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-10)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.03
- Grade Unit: %
- Intercept: 0.3 m
- From: 882.83 m
- To: 883.13 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:882.83-883.13
- Mining Method: underground

#### Location

- Location: F. Roskear Numbered lode
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A very narrow and low-grade tin intercept, indicating minimal tin mineralization in this zone.

- Negative factor: Very low tin grade \(0.03% Sn\).

- Negative factor: Very narrow intercept length \(0.30m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.03

Context: 0.30

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-11)

South Crofty · copper

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: copper
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.81
- Grade Unit: %
- Intercept: 0.3 m
- From: 882.83 m
- To: 883.13 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:882.83-883.13
- Mining Method: underground

#### Location

- Location: F. Roskear Numbered lode
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A narrow copper intercept from a newly identified structure, adding to the understanding of polymetallic mineralization.

- Positive factor: Copper intercept \(0.81% Cu\) from a newly identified structure.

- Negative factor: Very narrow intercept length \(0.30m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.81% Cu

Context: 0.30

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-12)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.12
- Grade Unit: %
- Intercept: 8.58 m
- From: 905.61 m
- To: 914.19 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:905.61-914.19
- Mining Method: underground

#### Location

- Location: G. Newly Discovered Roskear Tungsten Zone
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A wide but low-grade tin intercept within a newly discovered tungsten zone, indicating minor tin mineralization.

- Positive factor: Intercept is from a newly discovered zone, adding to exploration potential.

- Negative factor: Low tin grade \(0.12% Sn\) over the interval.

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.12

Context: 8.58

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-13)

South Crofty · tungsten

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tungsten
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 1.41
- Grade Unit: %
- Intercept: 8.58 m
- From: 905.61 m
- To: 914.19 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:905.61-914.19
- Mining Method: underground

#### Location

- Location: G. Newly Discovered Roskear Tungsten Zone
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: An exceptional high-grade tungsten intercept over a significant width, marking a highly material new discovery for the project.

- Positive factor: Exceptional high-grade tungsten intercept \(1.41% W\) over a significant width \(8.58m\).

- Positive factor: Represents a new high-grade tungsten discovery, a critical mineral.

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 1.41% W

Context: 8.58

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-14)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 1.48
- Grade Unit: %
- Intercept: 0.42 m
- From: 905.61 m
- To: 906.03 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:905.61-906.03
- Mining Method: underground

#### Location

- Location: G. Newly Discovered Roskear Tungsten Zone
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A moderate grade tin intercept within a narrow zone, contributing to the overall polymetallic potential of the new discovery.

- Positive factor: Moderate grade tin intercept \(1.48% Sn\) within a newly discovered tungsten zone.

- Negative factor: Narrow intercept length \(0.42m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 1.48

Context: 0.42

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-15)

South Crofty · tungsten

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tungsten
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 4.69
- Grade Unit: %
- Intercept: 0.42 m
- From: 905.61 m
- To: 906.03 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:905.61-906.03
- Mining Method: underground

#### Location

- Location: G. Newly Discovered Roskear Tungsten Zone
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A high-grade tungsten intercept within a narrow zone, confirming the presence of significant tungsten mineralization in the new discovery.

- Positive factor: High-grade tungsten intercept \(4.69% W\) within a newly discovered zone.

- Negative factor: Narrow intercept length \(0.42m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 4.69% W

Context: 0.42

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-16)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 0.52 m
- From: 906.96 m
- To: 907.48 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:906.96-907.48
- Mining Method: underground

#### Location

- Location: G. Newly Discovered Roskear Tungsten Zone
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A narrow and very low-grade tin intercept within the newly discovered tungsten zone, indicating minimal tin mineralization.

- Negative factor: Very low tin grade \(0.01% Sn\).

- Negative factor: Narrow intercept length \(0.52m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.01

Context: 0.52

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-17)

South Crofty · tungsten

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tungsten
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 15.15
- Grade Unit: %
- Intercept: 0.52 m
- From: 906.96 m
- To: 907.48 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:906.96-907.48
- Mining Method: underground

#### Location

- Location: G. Newly Discovered Roskear Tungsten Zone
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: An exceptionally high-grade tungsten intercept, representing a bonanza discovery and a highly material new opportunity for the project.

- Positive factor: Bonanza grade tungsten intercept \(15.15% W\), described as 'not often seen in tungsten exploration'.

- Positive factor: Represents a highly significant new high-grade tungsten discovery, a critical mineral.

- Negative factor: Narrow intercept length \(0.52m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 15.15% W

Context: 0.52

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-18)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 0.36 m
- From: 913.17 m
- To: 913.53 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:913.17-913.53
- Mining Method: underground

#### Location

- Location: G. Newly Discovered Roskear Tungsten Zone
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A very narrow and low-grade tin intercept within the newly discovered tungsten zone, indicating minimal tin mineralization.

- Negative factor: Very low tin grade \(0.01% Sn\).

- Negative factor: Very narrow intercept length \(0.36m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.01

Context: 0.36

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-19)

South Crofty · tungsten

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tungsten
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.95
- Grade Unit: %
- Intercept: 0.36 m
- From: 913.17 m
- To: 913.53 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:913.17-913.53
- Mining Method: underground

#### Location

- Location: G. Newly Discovered Roskear Tungsten Zone
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A moderate grade tungsten intercept within a narrow zone, confirming the presence of tungsten mineralization in the new discovery.

- Positive factor: Moderate grade tungsten intercept \(0.95% W\) within a newly discovered zone.

- Negative factor: Very narrow intercept length \(0.36m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.95% W

Context: 0.36

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-20)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.09
- Grade Unit: %
- Intercept: 0.32 m
- From: 913.87 m
- To: 914.19 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:913.87-914.19
- Mining Method: underground

#### Location

- Location: G. Newly Discovered Roskear Tungsten Zone
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A narrow and low-grade tin intercept within the newly discovered tungsten zone, indicating minor tin mineralization.

- Negative factor: Low tin grade \(0.09% Sn\).

- Negative factor: Very narrow intercept length \(0.32m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.09

Context: 0.32

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-21)

South Crofty · tungsten

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tungsten
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 3.68
- Grade Unit: %
- Intercept: 0.32 m
- From: 913.87 m
- To: 914.19 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:913.87-914.19
- Mining Method: underground

#### Location

- Location: G. Newly Discovered Roskear Tungsten Zone
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A high-grade tungsten intercept within a narrow zone, confirming the presence of significant tungsten mineralization in the new discovery.

- Positive factor: High-grade tungsten intercept \(3.68% W\) within a newly discovered zone.

- Negative factor: Very narrow intercept length \(0.32m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 3.68% W

Context: 0.32

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-22)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.03
- Grade Unit: %
- Intercept: 0.29 m
- From: 921.83 m
- To: 922.12 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:921.83-922.12
- Mining Method: underground

#### Location

- Location: H. Newly Discovered Roskear Tungsten Lode
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A very narrow and low-grade tin intercept within a newly discovered tungsten lode, indicating minimal tin mineralization.

- Negative factor: Very low tin grade \(0.03% Sn\).

- Negative factor: Very narrow intercept length \(0.29m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.03

Context: 0.29

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-23)

South Crofty · tungsten

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tungsten
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 2.02
- Grade Unit: %
- Intercept: 0.29 m
- From: 921.83 m
- To: 922.12 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:921.83-922.12
- Mining Method: underground

#### Location

- Location: H. Newly Discovered Roskear Tungsten Lode
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A high-grade tungsten intercept from a newly discovered lode, confirming new tungsten mineralization.

- Positive factor: High-grade tungsten intercept \(2.02% W\) from a newly discovered lode.

- Negative factor: Very narrow intercept length \(0.29m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 2.02% W

Context: 0.29

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-24)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 3.37
- Grade Unit: %
- Intercept: 0.48 m
- From: 948 m
- To: 948.48 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:948-948.48
- Mining Method: underground

#### Location

- Location: I. Newly Discovered
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A high-grade tin intercept from a newly discovered structure, adding to the exploration potential.

- Positive factor: High-grade tin intercept \(3.37% Sn\) from a newly discovered structure.

- Negative factor: Narrow intercept length \(0.48m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 3.37

Context: 0.48

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-25)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.47
- Grade Unit: %
- Intercept: 0.38 m
- From: 982.25 m
- To: 982.63 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:982.25-982.63
- Mining Method: underground

#### Location

- Location: J. Newly Discovered
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A narrow tin intercept from a newly discovered structure, contributing to the overall exploration potential.

- Positive factor: Intercept is from a newly discovered structure, adding to exploration potential.

- Negative factor: Narrow intercept length \(0.38m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.47

Context: 0.38

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-26)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 2.79
- Grade Unit: %
- Intercept: 0.35 m
- From: 1006.74 m
- To: 1007.09 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:1006.74-1007.09
- Mining Method: underground

#### Location

- Location: K. Newly Discovered
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A high-grade tin intercept from a newly discovered structure, adding to the exploration potential.

- Positive factor: High-grade tin intercept \(2.79% Sn\) from a newly discovered structure.

- Negative factor: Narrow intercept length \(0.35m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 2.79

Context: 0.35

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-27)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 1.47
- Grade Unit: %
- Intercept: 0.3 m
- From: 1036.35 m
- To: 1036.65 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:1036.35-1036.65
- Mining Method: underground

#### Location

- Location: L. Newly Discovered
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A moderate grade tin intercept from a newly discovered structure, adding to the exploration potential.

- Positive factor: Moderate grade tin intercept \(1.47% Sn\) from a newly discovered structure.

- Negative factor: Very narrow intercept length \(0.30m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 1.47

Context: 0.30

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-28)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 0.54
- Grade Unit: %
- Intercept: 1.39 m
- From: 1089.37 m
- To: 1090.76 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:1089.37-1090.76
- Mining Method: underground

#### Location

- Location: M. Roskear B
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A low-grade tin intercept confirming the westward extension of the Roskear B lode.

- Positive factor: Confirms mineralization in the Roskear B lode, extending it to the west.

- Negative factor: Low tin grade \(0.54% Sn\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 0.54

Context: 1.39

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-29)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 1.49
- Grade Unit: %
- Intercept: 0.44 m
- From: 1089.91 m
- To: 1090.35 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:1089.91-1090.35
- Mining Method: underground

#### Location

- Location: M. Roskear B
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A moderate grade tin intercept within a narrow zone, confirming mineralization in the Roskear B lode.

- Positive factor: Moderate grade tin intercept \(1.49% Sn\) within the Roskear B lode.

- Negative factor: Narrow intercept length \(0.44m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 1.49

Context: 0.44

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_002

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-30)

South Crofty · tin

#### Identity

- Hole ID: SDD26\_002
- Project: South Crofty
- Commodity: tin
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 1.05
- Grade Unit: %
- Intercept: 0.37 m
- From: 1102.85 m
- To: 1103.22 m
- Hole Depth: 1131 m
- Intercept Depth: 409.27 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_002:1102.85-1103.22
- Mining Method: underground

#### Location

- Location: N. Newly Discovered Lode Below Roskear B
- Loc. Source: document

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A moderate grade tin intercept from a newly discovered lode, adding to the exploration potential below Roskear B.

- Positive factor: Moderate grade tin intercept \(1.05% Sn\) from a newly discovered lode.

- Negative factor: Narrow intercept length \(0.37m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · table

> 1.05

Context: 0.37

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

### SDD26\_001A

[Link to this fact](https://atlas-staging.minestarters.com/news/further-positive-assay-results-from-roskear-drilling-programme-including-discove--845a1f96-413a-417c-8fa3-9cc450ce2297#fact-drill-facts-31)

South Crofty · tungsten

#### Identity

- Hole ID: SDD26\_001A
- Project: South Crofty
- Commodity: tungsten
- Region: cornwall, united kingdom
- Reported Region: cornwall, united kingdom
- Ticker: TIN

#### Geometry

- Grade: 2.01
- Grade Unit: %
- Intercept: 0.66 m
- From: 850 m
- To: 850.66 m
- Hole Depth: 1199 m
- Intercept Depth: 850 m

#### Classification

- Program: exploration
- Sample Type: drill
- Group ID: SDD26\_001A:850-850.66
- Mining Method: underground

#### QA/QC

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

#### Review

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

#### Dates

- Event date: 2026-10-01T00:00:00.000Z

Reasoning: A high-grade tungsten intercept from the first drill hole, indicating significant tungsten mineralization and prospectivity.

- Positive factor: High-grade tungsten intercept \(2.01% W\) from the first drill hole, confirming tungsten prospectivity.

- Negative factor: Narrow intercept length \(0.66m\).

- Negative factor: True width not yet calculated, potentially overstating apparent width.

Evidence · text

> 0.66m at 2.01% W \(2.54% WO₃\)

#### Tags used in scoring

**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: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

## How Atlas produces this analysis

Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.