Issue Date: January/February 2009

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GEOSTRATA, 2009, January/February, 29-33   In the 275 years since the first shipment of coal from the Richmond Coal Field in Virginia, more than eight million acres of the continental United States have been undermined. Underground mining can result in mine subsidence – a ground movement phenomenon that may damage structures, modify surface drainage, and […]

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Categorized as: Geotechnics