USGS Open-File Report 02-0174: Quality of Economically Extractable Coal Beds in the Gillette Coal Field as Compared With Other Tertiary Coal Beds in the Powder River Basin, Wyoming and Montana

Open-File Report 02–0174

Quality of Economically Extractable Coal Beds in the Gillette Coal Field as Compared With Other Tertiary Coal Beds in the Powder River Basin, Wyoming and Montana

By Margaret S. Ellis

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U.S. Department of the Interior \| U.S. Geological Survey URL: https://pubsdata.usgs.gov/pubs/of/2002/ofr-02-0174/ Questions or Assistance: USGS Web Contact Page Last Modified: Wed Dec 7 19:04 EST 2016