Bibliographic Reference | Glass, G.B., and Roberts, J.T., 1979, Structure, coal thickness, and shallow overburden for coal beds No. 89, No. RME 92, No. 88, No. 86, No. 80, No. 77, No. 76, No. 73, and Hanna No. 5 in the Hanna mining district, Hanna coal field, southcentral Wyoming: Geological Survey of Wyoming [Wyoming State Geological Survey] Open File Report 79-5. |