Longwall mining, subsidence, and protection of water resources in Virginia
In the coalfields of Southwest Virginia, Iongwall technology accounts for an increasing proportion of underground coal mine production. lt is a highly productive, capital intensive method that provides a degree of mine safety greater than conventional methods. However, subsidence caused by Iongwall...
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Virginia Polytechnic Institute and State University
2014
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| Online Access: | http://hdl.handle.net/10919/50086 |