Massey Energy Company (a subsidiary of Alpha Natural Resources) is a coal extractor in the United States with substantial operations in West Virginia, Kentucky, Virginia and Tennessee. By revenue, it is the fourth largest producer of coal in the United States and the largest coal producer in Central Appalachia.
As of 2010, Massey leads the nation in mountaintop removal (MTR) mining, which requires the blowing up of mountaintops to access coal beds underneath. MTR mining has terrible environmental effects, both in terms of destroying natural beauty and poisoning human health.
Due to their use of MTR and a blatant disregard for safety, Massey is one of the most polluting and most dangerous companies in the US.