Powder River Basin: 162B Tons of Coal
February 28, 2013 | USGS
The Powder River Basin of Wyoming and Montana contains about 162 billion short tons of recoverable coal from a total of 1.07 trillion short tons of in-place resources according to a new USGS assessment.
US Energy Mapping System
January 5, 2014 | Energy Information Administration
The Energy Information Administration has an interactive map of energy locations in the United States. You can use it to plot data layers showing the location of wind (see map sample below), coal mines, biomass plants, geothermal, hydroelectric, and many other types of energy projects.
Powder River Basin Coal Assessment
October 25, 2013 | United States Geological Survey
"Using a geology-based assessment methodology, the U.S. Geological Survey estimated in-place resources of 1.07 trillion short tons of coal in the Powder River Basin, Wyoming and Montana. Of that total, with a maximum stripping ratio of 10:1, recoverable coal was 162 billion tons. The estimate of economically recoverable resources was 25 billion tons." Quoted from the USGS fact sheet.