2013-09-12, 17:35
Calculating the true cost of a ton of mountaintop coal
To meet current US coal demand through surface mining, an area of the Central Appalachians the size of Washington, D.C., would need to be mined every 81 days. A one-year supply of coal would require converting about 310 square miles of the region's mountains into surface mines, according to a new analysis.
http://feeds.sciencedaily.com/~r/science...184815.htm
To meet current US coal demand through surface mining, an area of the Central Appalachians the size of Washington, D.C., would need to be mined every 81 days. A one-year supply of coal would require converting about 310 square miles of the region's mountains into surface mines, according to a new analysis.
http://feeds.sciencedaily.com/~r/science...184815.htm