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The mine was the first Michigan copper mine to switch from fissure mining to amygdaloid mining, when the recently discovered Pewabic amygdaloid lode was found to cross Quincy property in 1856. [9] High-grade fissure veins contained large, pure masses of copper, but the masses could take days or even months to extract, at high cost.
The Quincy Mine No. 2 Shaft Hoist House is an industrial building located north of Hancock, Michigan along US Highway 41 within the Quincy Mining Company Historic District. The Hoist House contains the largest steam hoisting engine in the world, [ 3 ] which sits on the largest reinforced concrete engine foundation ever poured. [ 3 ]
Drawing of Quincy Stamp Mills site. The Quincy Mining Company Stamp Mills Historic District is a historic stamp mill (used to crush copper-bearing rock, separating the copper ore from surrounding rock) located on M-26 near Torch Lake, just east of Mason in Osceola Township. [2]
The Quincy Mine was known as "Old Reliable," as the Quincy Mine Company paid a dividend to investors every year from 1868 through 1920. The mine operated between 1846 and 1945, although some activities continued through the 1970s. 32: Quincy Mining Company Stamp Mills Historic District: Quincy Mining Company Stamp Mills Historic District
The Quincy Smelter, also known as the Quincy Smelting Works, is a former copper smelter located on the north side of the Keweenaw Waterway in Ripley, Michigan. It is a contributing property of the Quincy Mining Company Historic District , a National Historic Landmark District .
The Quincy Dredge Number Two (previously known as the Calumet and Hecla Dredge Number One) is a dredge currently sunk in shallow water in Torch Lake, across M-26 from the Quincy Mining Company Stamp Mills Historic District and just east of Mason in Osceola Township. [2]
West Quincy couples are enjoying a summer's evening at The Oak cabin in the Quincy quarries in the summer of 1950. John Bonomi's collection is now at the Thomas Crane Public Library Local History ...
The end of the war brought an end to high prices, and nearly all companies closed, leaving only the Calumet and Hecla, Quincy, and Copper Range mining companies. Both Calumet and Hecla and Quincy survived largely by reprocessing the stamp sand left from older mining operations, leaching out copper left by more primitive processing techniques. [9]