SILVER BOW MINING CORP
Rainbow Block Project - Butte Mining District, Montana - Silver-Gold-Lead-Zinc
Company just completed a 3x oversubscribed financing raising $67M. On May 7th celebrated being listed on NYSE American by ringing the opening bell. On May 4th announced that surface drilling had commenced at the Rainbow Block Project in Butte Mining District, Montana. In June 2025, Company announced an Inferred Mineral Resource of 170 Moz AgEq at 14.8 oz/ton (or 4.28 oz/ton Ag, 0.05 oz/ton Au, 1.25% Pb, and 4.59% Zn) in 11.8M tons.
Beyond the Headline
Silver Bow Mining Corp. on May 5, 2026 announced commencement of a surface drilling program on their Rainbow Block Project in the historic mining of Butte Montana. The drill program, which will include approximately 25,000 ft (~7,600m) of drilling on Company privately owned, patented claims, will test areas adjacent to the Company’s previously announced Inferred Mineral Resource Estimate of approximately 170 million silver equivalent ounces at 14.8 oz/ton (or 4.28 oz/ton Ag, 0.05 oz/ton Au, 1.25% Pb, and 4.59% Zn) conducted under S-K 1300 and NI 43-101 standards as announced in the Company’s news release dated June 30, 2025.
There are 42 veins above the current water table and within 1,000 ft (~300m) of surface. There is established infrastructure with exploration permit in place and underground decline permit amendment in progress. Over 10,000 miles (16,000km) of historical workings demonstrate that extraction of ore in previous operations in the Butte Mining District has had good success where operations had sufficient grade, quantity, and geological understanding. Silver Bow is well-cashed up after raising US$67 Million in its IPO.
Historically Butte Montana is reported to have produced 702 Moz Ag, 2.55 Moz Au, 11.2Mt Cu, 2.2Mt Zn, 1.68Mt Mn, 387kt Pb, 92.6kt Mo from 1881 to 2024. The bulk of production took place from 1881 to 1992. Geologically, Butte is an exceptional example of a porphyry+ high grade vein hybrid system with exceptional vertical zoning from upper Ag-Mn-Pb veins, to intermediate Cu-Zn-Pb veins and a deep Cu-rich deep porphyry.
This is an excellent opportunity especially with current high Ag prices to revive an historic mining district using modern exploration and mining techniques. Another company definitely to watch!