https://www.usgs.gov/publications/status-report-usgs-coal-assessment-powder-river-basin-wyoming
Summary: This publication reports on the status of the current coal assessment of the Powder River Basin (PRB) in Wyoming and Montana. This slide program was...
powder river basinstatus reportusgscoalassessment
https://www.usgs.gov/publications/tremors-earthquakes-and-blasting-powder-river-basin-wyoming-and-montana
Coal in the Powder River Basin of Wyoming and Montana (fig. 1) is greatly in demand. It can be economically mined from the surface, and the land is much easier...
powder river basintremorsearthquakesblasting