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.
Vitrinite Reflectance Data for the Wind River Basin
February 19, 2013 | USGS
The United States Geological Survey has published: New Vitrinite Reflectance Data for the Wind River Basin, Wyoming. "The purpose of this report is to present new vitrinite reflectance data collected mainly from Cretaceous marine shales in the Wind River Basin to better characterize their thermal maturity and hydrocarbon potential." Quoted from the USGS publication announcement.
Nitrate in the Illinois River
November 3, 2013 | USGS
"Nitrate levels in the Illinois River decreased by 21 percent between 2000 and 2010, marking the first time substantial, multi-year decreases in nitrate have been observed in the Mississippi River Basin since 1980." Quoted from the USGS press release.