Rock Mining

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“Homestake open cut, sills in Cambrian, showing Algonkian schist below.” -Walcott, 1901

Keywords

geology, Rock formation, rock mining, mineral extraction, homestake open cut, open-pit mining, opencast mining, strip mining, Cambrian sills, Algonkian schist

Galleries

Rocks

Source

Walcott, Charles D. Annual Reports of the Department of the Interior (Washington, DC: Government Printing Office, 1901)

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