OPERATIONS UPDATE FOR THE SOUTH CROFTY TIN PROJECT
Original announcement by lse on
- Company
- Cornish Metals plc
- Ticker
- TIN
- Exchange
- LSE
- Region
- Cornwall, United Kingdom
- Primary commodity
- Tin
- Secondary commodities
- Tungsten, Copper
- Document categories
- Drill results, Other
- Extracted
- 2026-10-12 11:13:42 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Cornish Metals has completed its Roskear West surface drilling programme, confirming tin mineralisation extends west of the current Mineral Resource Estimate and discovering a new high-grade tungsten zone. The company also reported significant infrastructure progress, including the opening of a new workshop and the arrival of critical mine winders.
Reasoning: The update reports successful completion of a surface drilling programme that confirms resource extension and identifies new high-grade tungsten, alongside significant construction progress.
Positive factors
- tin mineralisation confirmed continuing west of current MRE
- discovery of new high-grade tungsten zone
- identification of previously unmodelled tin-bearing structures
- infrastructure milestones reached (winder, workshop, excavation)
Negative factors
- all intervals are downhole lengths; true widths not yet calculated
Facts used in scoring: 5
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: Drilling confirmed tin lodes continuing west of the current MRE.
Evidence · text
“confirming tin lodes continuing west of the current Mineral Resource Estimate ("MRE")”
Apparent Width Onlynegative
Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness.
Why it applies: All intervals are reported as downhole lengths with no true width calculated.
Evidence · text
“All intervals are downhole lengths; true widths have not yet been calculated.”
Extracted facts
Stored fact records: 5. Some facts used in scoring do not have a stored record.
Drill Results (5)
SDD26_001ASouth Crofty · tinGrade: 4.18Grade Unit: %Intercept: 0.79 mView all detailsHide details
Identity
- Hole ID
- SDD26_001A
- Project
- South Crofty
- Commodity
- tin
- Region
- cornwall, united kingdom
- Reported Region
- cornwall, united kingdom
- Ticker
- TIN
Geometry
- Grade
- 4.18
- Grade Unit
- %
- Intercept
- 0.79 m
Classification
- Sample Type
- drill
- Group ID
- SDD26_001A:0-0.79
- Mining Method
- unknown
Location
- Location
- Roskear 1 South
- Loc. Source
- document
QA/QC
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-10-12T00:00:00.000Z
Reasoning: High grade tin intercept confirming lode continuity.
Positive factors
- high grade intercept
Negative factors
- apparent width only
Evidence · text
“0.79 metres at 4.18% Sn (Roskear 1 South) in drillhole SDD26_001A”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
SDD26_002South Crofty · tinGrade: 1.46Grade Unit: %Intercept: 1.51 mView all detailsHide details
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
Classification
- Sample Type
- drill
- Group ID
- SDD26_002:0-1.51
- Mining Method
- unknown
Location
- Location
- Roskear South
- Loc. Source
- document
QA/QC
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-10-12T00:00:00.000Z
Reasoning: Standard intercept confirming lode continuity.
Positive factors
- includes high grade sub-interval
Negative factors
- apparent width only
Evidence · text
“1.51 metres at 1.46% Sn”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
SDD26_002South Crofty · tinGrade: 5.71Grade Unit: %Intercept: 0.33 mView all detailsHide details
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
Classification
- Sample Type
- drill
- Group ID
- SDD26_002:0-1.51
- Mining Method
- unknown
Location
- Location
- Roskear South
- Loc. Source
- document
QA/QC
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-10-12T00:00:00.000Z
Reasoning: High grade sub-interval within the main intercept.
Positive factors
- high grade sub-interval
Evidence · text
“including 0.33 metres at 5.71% Sn (Roskear South)”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
SDD26_002South Crofty · tungstenGrade: 1.41Grade Unit: %Intercept: 8.58 mView all detailsHide details
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
Classification
- Sample Type
- drill
- Group ID
- SDD26_002:0-8.58
- Mining Method
- unknown
Location
- Location
- Roskear South
- Loc. Source
- document
QA/QC
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-10-12T00:00:00.000Z
Reasoning: Discovery of a new high-grade tungsten zone.
Positive factors
- new high-grade tungsten zone discovery
- significant width
Negative factors
- apparent width only
Evidence · text
“8.58 metres at 1.41% W (1.78% WO₃)”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
SDD26_002South Crofty · tungstenGrade: 15.15Grade Unit: %Intercept: 0.52 mView all detailsHide details
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
Classification
- Sample Type
- drill
- Group ID
- SDD26_002:0-8.58
- Mining Method
- unknown
Location
- Location
- Roskear South
- Loc. Source
- document
QA/QC
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-10-12T00:00:00.000Z
Reasoning: Very high grade tungsten sub-interval.
Positive factors
- bonanza grade
Negative factors
- apparent width only
Evidence · text
“including 0.52 metres at 15.15% W (19.10% WO₃)”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not true
Cut-off Undisclosednegative
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.