U.S. Geological Survey

Preliminary Report on Coal Resources
of the Wyodak-Anderson Coal Zone,
Powder River Basin,
Wyoming and Montana

By Margaret S. Ellis, Gregory L. Gunther, Romeo M. Flores,
Allan M. Ochs, Gary D. Stricker, Steven B. Roberts,
Thomas T. Taber, Lisa R. Bader, and John H. Schuenemeyer

U.S. Geological Survey Open-File Report 98-0789-A

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For more information about this report contact Margaret S. Ellis at mellis@usgs.gov