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Roof fall accidents decline, but remain leading cause of coal miner injuries MSHA initiative promotes continuous mining machine operator safety
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Cerrejón is a large openpit coal mine in Colombia. It is located in the southeast of the department of La Guajira, close to the border with Venezuela.
Longwall mining results in large blocks of coal being totally extracted and the mine roof allowed to collapse behind the working face. Generally, ...
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Official FullText Paper (PDF): Temporal and spatial changes of land use and landscape in a coal mining area in Xilingol grassland
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CCTR Indiana Center for Coal Technology Research 2 As geological processes apply pressure to peat over time, it is transformed successively into different types of coal
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J China Univ Mining Technol 2007, 17(4): 0489 0493 Classification of Infrared Monitor Images of Coal Using an Feature Texture Statistics and Improved .
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classification ... Raster images for surface elevations (left) ... This amendment further addresses surface property owner rights, coal mine
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