Within Keweenaw National Historical Park's Quincy Unit are the former Quincy Mining Company properties, including the sites of the mine shafts, hoist houses and the copper smelting complex on the shore of Portage Lake. Much of the former Quincy Mine was designated as a National Historic Landmark District in 1989. Tours of the 1908 Shaft-rockhouse, 1918 Hoist house and the underground are operated by the Quincy Mine Hoist Association, one of the Park's 21 Heritage sites. When Keweenaw National Historical Park was established in 1992, Congress recognized the former Quincy Mine as one of the components that best represents the story of copper mining on Michigan's Keweenaw Peninsula.
Established in 1848, Quincy Mine was one of the early mines to the Copper Country. After floundering for nearly a decade, the discovery of the Pewabic Lode on the property reversed their fortunes. Quincy became the second largest mining company in the area by the 1880s and paid dividends every year from 1862-1920, earning the nickname "Old Reliable." At closing in 1945, Quincy shafts plunged 9,260 feet into the ground, making them some of the deepest in the world at the time.
Last updated: June 19, 2022