MS-23 Map, Directory, and Statistics of Permitted Colorado Coal Mines, 1983

MI-27 Geology of Denver, Colorado, U.S.A.

RS-21 Precambrian Tungsten and Copper-Zinc Skarn Deposits of South-Central Colorado

OF-81-07 Colorado Energy Activity Profile

MS-15 Map and Discovery of Permitted Colorado Coal Mines, 1981

RS-08 Proceedings of the Fifteenth Forum on Geology of Industrial Minerals: Industrial Minerals in Colorado and the Rocky Mountain Region

RS-11 Rare Earth Pegmatites of the South Platte District, Colorado

OF-80-07 Methane Drainage Plan Using Horizontal Holes at the Hawk’s Nest East Mine, Paonia, Colorado

OF-79-01 Colorado Coal Reserve Depletion Data and Coal Mine Summaries

MS-13 State Lands Status Map: Lands and Minerals Administered by Agencies of the Colorado Department of Natural Resources

MS-09 Coal Resources and Development Map of Colorado

OF-78-06 Isopach Map of the Watkins Lignite Seam, Adams and Arapahoe Counties, Colorado and a Map Showing Extent of Alluvial Valley Floors and Overburden Thickness above the Watkins Lignite Seam, Adams and Arapahoe Counties, Colorado