RS-03 Colorado Coal Directory and Source Book 1978 RS-03 Colorado Coal Directory and Source Book 1978
OF-78-01 Evaluation of Coking Coal Deposits in Colorado First Annual Report (detail) OF-78-01 Evaluation of Coking Coal Deposits in Colorado First Annual Report
RS-04 Proceedings of the Second Symposium on the Geology of Rocky Mountain Coal RS-04 Proceedings of the Second Symposium on the Geology of Rocky Mountain Coal, 1977
MS-10 Metal Mining Activity Map of Colorado Excluding Uranium and Vanadium (with Directory) MS-10 Metal Mining Activity Map of Colorado Excluding Uranium and Vanadium (with Directory), 1978
RS-01 Geology of Rocky Mountain Coal: A Symposium RS-01 Geology of Rocky Mountain Coal: A Symposium, 1976
OF-77-01 Preliminary Investigation and Feasibility Study of Environmental Impact of Energy Resource Development in the Denver Basin (detail) OF-77-01 Preliminary Investigation and Feasibility Study of Environmental Impact of Energy Resource Development in the Denver Basin
OF-76-01 Active/Licensed Coal Mines of Colorado (detail) OF-76-01 Active/Licensed Coal Mines of Colorado