Energy Information Administration EIA Independent Statistics ...
Note: Powder River Basin coal has a lower thermal content, typically 8,4008,800 Btu per pound, compared with Eastern coal, which averages 12,00013,000 Btu per pound. Preliminary coal production data for 2012 show that 9 out of the top 10 producing coal mines in the United States are located in Wyoming; the top two producing mines in Wyoming ...