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The Anaconda Copper Mine produced from an open pit from 1918 to 1978. The copper ore bodies are contact metamorphic replacement deposits in limestone. Production through 1921 was 39 thousand tonnes of copper. [41]: 133–134 The largest copper producer in Nevada has been the Ely district (also called the Robinson district) in White Pine County ...
The Ahtna (also Ahtena, Atna, Ahtna-kohtaene, or Copper River) are an Alaska Native Athabaskan people of the Athabaskan-speaking ethnolinguistic group. The people's homeland called Atna Nenn', is located in the Copper River area of southern Alaska, and the name Ahtna derives from the local name for the Copper River.
Lake Atna (/ ˈ ɑː t n ə /; also known as Lake Ahtna) was a prehistoric proglacial lake that initially formed approximately 58 ka (thousand years ago) in the Copper River Basin, an area roughly centered around 245 km (152 mi) northeast of modern-day Anchorage, Alaska.
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Copper Basin Railway, Arizona; Copper Basin High School, Copperhill, Tennessee This page was last edited on 29 February 2020, at 20:16 (UTC). Text is available ...
Copper Breaks State Park is a state park in Hardeman County, Texas, located approximately 12 miles (19 km) south of Quanah, the county seat. It covers 1,898.8 acres (768.4 ha) and contains two small lakes and 10 miles (16 km) of trails.
This process is the basis for all modern leaching (or solvent) processes used in copper mines around the world. [14] [15] [16] He later flirted with California oil projects, Chilean copper mines, and Chihuahua, Mexico railroads and silver-lead mines, but his great works had been completed.