Mining
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Mining is the extraction of geological materials and minerals from Earth's surface. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly made ar
Mining of sulfur from a deposit at the edge of Ijen's crater lake, Indonesia
Malachite
Agricola, author of De Re Metallica
Gallery, 12th to 13th century, Germany
Coal mining
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Coal mining is the process of extracting coal from the ground or from a mine. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. In the United King
Surface coal mining in Wyoming, U.S.
A coal mine mantrip at Lackawanna Coal Mine in Scranton, Pennsylvania
Coal miners exiting a winder cage at a mine near Richlands, Virginia in 1974
A coal mine in Frameries, Belgium