Reports
Technical Report
Silver Bow Mining Corp. has released an inferred Mineral Resource estimate on its flagship Rainbow Block property. The inferred Mineral Resource estimate is contained within a Technical Report Summary prepared in accordance with the requirements of Subpart 1300 of Regulation S-K (“S-K 1300”) titled ‘Technical Report Summary: Rainbow Block, Butte Mining District, Silver Bow County, Montana, USA’ and National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”) Technical Report titled ‘Technical Report on the Rainbow Block Property, Butte Mining District, Silver Bow County, Montana, USA’ with an effective date of December 31, 2024, prepared by Jacob Anderson, CPG, MAusIMM of Dahrouge Geological Consulting.
Mineral Resource Statement under S-K 1300 and NI 43-101 standards at 31st December 2024,
for the Rainbow Block in imperial and metric units
Commodity prices and recoveries utilized in AgEq inferred Mineral Resource estimate
Average Grade by Metal and Contained Metal in the Silver Equivalent (AgEq) Inferred Mineral Resource Estimate
Average individual metal grades and contained metal for the individual metals included in the AgEq calculation within the AgEq inferred Mineral Resource estimate for the Rainbow Block were calculated using a cut-off grade of 4 oz/t AgEq and 90% metallurgical recovery.
Key Highlights
- 170 million silver equivalent ounces inferred resource at 14.8 oz/ton (or 4.28 oz/ton Ag, 0.05 oz/ton Au,1.25% Pb, and 4.59% Zn) within 11.48 million tons of vein material conducted under S-K 1300 and NI 43-101 standards
- Ownership of 878 acres of patented mineral rights on the Rainbow Block, in the Butte Mining District
- 42 veins above modeled water table, approximately 1,000 ft of below surface
- Established infrastructure with exploration permit in place
- Over 10,000 miles of historical workings demonstrate extraction of ore in the Butte Mining District has had reasonable success where operations had sufficient grade, quantity, and geological understanding
The inferred Mineral Resource estimate was prepared by Dahrouge Geological Consulting from a comprehensive database including 273 historical drill holes, 8 recent diamond drill holes, and over 15,000 Anaconda Company underground channel samples. The assessment utilized wireframe boundaries to domain the combined drill-hole and channel sampling database into 42 veins.
Based on this comprehensive assessment, the Company has established an inferred Mineral Resource estimate of approximately 170 million silver equivalent ounces. The Company intends to advance this resource through upgraded classification studies, modern metallurgical testing, and evaluation for narrow-vein underground mining utilizing the latest backfill technologies to optimize extraction efficiency and environmental performance.
NI 43-101 TECHNICAL REPORT
Feb 1, 2026 — PDF 127 pgs / 7.3 Mb
SK-1300 TECHNICAL REPORT
May 27, 2025 — PDF 138 pgs / 7.8 Mb