| Company | Highland Copper Company Inc. |
| Date | 2014 |
| Region | Keweenaw County, Michigan, USA |
| Commodities | Copper, Silver |
| Mine Type | Underground (Preferred) |
| Status | Exploration |
Executive Summary
This NI 43-101 Technical Report, dated October 2014, presents a mineral resource estimate for the 543S Copper Project owned by Highland Copper Company Inc. The report confirms the quality of the exploration database through a comprehensive QA/QC program and a historic drilling validation study involving 14 twin diamond drill holes. The resource estimate is based on three mining scenarios: underground only, open pit only, and a hybrid approach. The underground-only scenario has been retained as the primary mining option following a detailed review of development options.
The non-diluted Indicated Mineral Resource for the underground-only scenario is estimated at 1,518,000 tonnes at 3.27% Copper and 5.1 g Silver per tonne, using a cut-off grade of 1.9% Copper Equivalent. The Inferred Mineral Resource for this scenario is 193,000 tonnes at 3.08% Copper and 4.8 g Silver per tonne. The report concludes that the database is of sufficient quality to permit a NI 43-101 compliant Mineral Resource Estimate and provides the basis for the conclusions reached.
Recommendations for the next phase of work include advancing metallurgical and ore processing studies, conducting infill drilling on a 15 x 30 m grid, and assessing regions of potential upgrade in underground mineable mineral resources. Highland Copper Company plans to advance the project to a pre-feasibility stage with a budget of $900,000 CND to study mining, processing, and infrastructure alternatives.
Resource Summary
- Underground Indicated: 1,518,000 t @ 3.27% Cu, 5.1 g Ag/t
- Underground Inferred: 193,000 t @ 3.08% Cu, 4.8 g Ag/t
- Open Pit Indicated: 1,513,000 t @ 2.64% Cu, 4.2 g Ag/t
- Open Pit Inferred: 28,000 t @ 2.08% Cu, 3.4 g Ag/t
- Cut-off Grade (Underground): 1.9% Cu Eq.
Processing Methods
No processing methods are defined in this report. Section 17 (Recovery Methods) is marked as not relevant. Recommendations include the advancement of metallurgical and ore processing studies.
Reports
Website: https://www.mining.com/web/highland-copper-company-reports-high-grade-copper-locally-elevated-silver-grades-at-the-keweenaw-copper-project-michigan/
Report Date: 2014
Region: Keweenaw County, Michigan, USA
Project Status: Exploration
Commodity: Copper, Silver
Throughput:
Mine Life:
Mine Type: Underground (Preferred)
Ore type:
