SP-31 Proceedings of the 1985 Conference on Coal Mine Subsidence in the Rocky Mountain Region SP-31 Proceedings of the 1985 Conference on Coal Mine Subsidence in the Rocky Mountain Region
B-41 Bibliography and Index of Publications Related to Coal in Colorado: 1972-1977 B-41 Bibliography and Index of Publications Related to Coal in Colorado: 1972-1977
MS-19 The Coal Bed Methane Resources of Colorado (detail) MS-19 The Coal Bed Methane Resources of Colorado
MS-06 Energy Resource Development Map of Colorado (detail) MS-06 Energy Resource Development Map of Colorado