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The Bureau's program to automate longwall mining.
Coal Age 1975 Jul; 80(8):122-124
Initially, longwall mining was generally used in the United States only in mines where room-and-pillar methods were impractical and uneconomical. The realization is growing that longwall mining with powered shearer-loaders or plow-loaders, armored snaking face conveyors, and powered self-advancing roof supports has the potential for mining coal continuously and at extremely high production rates. It can also yield a cleaner coal product and make it possible to achieve coalbed recoveries approaching 100 pct--all at very high face worker productivity. Installations ranging from plows in thin, deep, friable coalbeds to shearer-loaders in thick, deep, highly faulted coalbeds, now operating in the major coal- producing regions of the United States, support the belief that available state-of-the-art longwall equipment can be adapted to the broad spectrum of American coalbeds and geologic settings.
OP; Journal Article
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Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division