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Gratiot Lake Project Prospect - Gratiot Lake, Keweenaw County; Gratiot Copper mine - Gratiot location, Keweenaw County; Dana mine - Central; Datolite mine - Isle Royale, Keweenaw County; Delaware mine - the abandoned town of Delaware, Keweenaw County, twelve miles south of Copper Harbor Delaware Fissure mine; Dover mine - Dover location
Underground mine producing nickel and copper concentrates 18 (2018) [8] 15 Phoenix Lander County, Nevada: Newmont Mining Corporation: Gold-copper ore, concentrated and leached 16 (2018) [6] 16 Lisbon Valley San Juan County, Utah: Lisbon Valley Mining Company Copper ore, open pit, heap leached 10–15 (2018) [9] 17 Miami: Gila County, Arizona ...
The Minong Mine site contains prehistoric copper mining pits, thought to be as old as 4500 years. In addition, the site contains the remains of the Minong Mine, a 19th century copper mine that produced 249 tons of copper over its ten years of existence. 33: Monarch: Monarch: June 14, 1984 : Palisade area on the north side of Blake Point [6
Copper knife, spearpoints, awls, and spade made from copper deposits mined by Native Americans in Wisconsin from the Late Archaic period, 3000 BC-1000 BC.. Native Americans were the first to mine and work the copper of Lake Superior and the Keweenaw Peninsula of northern Michigan between 5000 BCE and 1200 BCE.
Delaware Mine entrance. The Delaware Copper Mine is located off U.S. Highway 41 (US 41), 12 miles (19 km) south of Copper Harbor, Michigan. [4] The Delaware Copper Mine provides tours of one of the oldest copper mines in the Keweenaw, [4] dating back to 1846. [18] The mine had five shafts, with the deepest reaching 1,400 feet (430 m). [18]
The county is part of Michigan's Copper Country region, an area where copper mining was prevalent from the 1840s to the 1960s. Polished native copper nugget from Keweenaw County. Keweenaw County copper mines were important producers in the late 19th and early 20th centuries. [5] Haven Falls, on Haven Creek near Lac La Belle
The peninsula is part of Michigan's Copper Country region, as the region was home to the first major copper mining boom in the United States. Copper mining was active in this region from the 1840s to the 1960s. The peninsula is bisected by the Keweenaw Waterway, a partly natural, partly artificial waterway serving as a canal.
13-oz. nugget of native copper, Keweenaw County, Michigan.Size 9.5 x 8.6 x 1.7 cm. Native copper from the Keweenaw Peninsula Michigan about 2.5 inches (6.4 cm) long. Copper Country is highly unusual among mining districts in that the copper mined was predominantly in its elemental ("native") form, rather than in the form of compounds (mostly oxides and sulfides) that form the basis of the ...