Mountaintop removal mining

Herausgegeben:Miller, Frederic P.; Vandome, Agnes F.; McBrewster, John

• Broschiertes Buch

Produktbeschreibung

Mountaintop removal mining ( MTR), often referred to as mountaintop mining ( MTM), is a form of surface mining that involves the mining of the summit or summit ridge of a mountain Entire coal seams are removed from the top of a mountain, hill or ridge by removing the overburden above them, leaving a flat plateau or a gently rolling contour. The large amounts of overburden is moved into neighboring valleys.It is most closely associated with coal mining in the Appalachian Mountains in the eastern United States The process involves blasting with explosives to remove up to 400 vertical feet (120 m) of mountain to expose underlying coal seams Excess rock and soil are often dumped into what are called "holler fills" or "valley fills."After active mining has been completed all disturbed areas of the mining operation are required by Federal law contained in the Surface Mining Control and Reclamation Act of 1977 (SMCRA) to be reclaimed as one of several post-mining land use options.

Produktdetails

• Verlag: Alphascript Publishing
• Seitenzahl: 156
• Englisch
• ISBN-13: 9786130622534
• ISBN-10: 6130622538
• Artikelnr.: 28531557