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Tennessee has a long, rich, and varied mining history. Although the industry today accounts for only about threetenths of a percent of the state''s gross products and ...
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The 2010 Copiapó mining accident, also known then as the "Chilean mining accident", began on Thursday, 5 August 2010 with a cavein at the San José copper–gold ...
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Back — The roof or upper part in any underground mining cavity. Backfill — Mine waste or rock used to support the roof after coal removal. Barren — Said of rock ...
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A short history of coal mining in Northumberland, Durham and Newcastle upon Tyne from Medieval times to the 1990s
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