"An underground copper mine consisting of four shafts near the community of Trimountain. The Trimountain Mining Company was organized in 1899 and worked the Baltic Lode. Shafts at this mine were some of the steepest in the Keweenaw at 70 degrees from horizontal to follow the ore bodies. The mine operated under Trimountain until 1923, when the company was dissolved. Copper Range Consolidated Company took over operations in 1925 and operated the mine until 1930 when it was closed permanently. The Trimountain Mine produced approximately 144 million pounds of refined copper."
The Trimountain features 6 card slots, a windowed ID/photo slot, and a very generously sized bill pocket and measures 4" x 4.5" folded closed