A. L Hornbaker

1) 1972 summary of coal resources in Colorado

Author
Hornbaker, A. L
Series
Special publication volume 3
Publisher
Colorado Geological Survey
Pub. Date
1973.

2) 1975 summary of coal resources in Colorado

Author
Hornbaker, A. L
Series
Special publication volume 9
Publisher
Colorado Geological Survey, Department of Natural Resources, State of Colorado
Pub. Date
1976.
Edition
[Revised].

3) Metal mining activity map of Colorado, excluding uranium and vanadium

Author
Hornbaker, A. L
Series
Map volume 10
Publisher
Colorado Geological Survey
Pub. Date
1978.

4) Metal mining activity map of Colorado and directory, 1984

Author
Hornbaker, A. L
Series
Map volume 24
Publisher
Colorado Geological Survey, Department of Natural Resources
Pub. Date
1984.

5) Geology and resource potential of strategic minerals in Colorado

Author
Schwochow, S. D
Series
Information volume 17
Publisher
Colorado Geological Survey, Department of Natural Resources, State of Colorado
Pub. Date
1985.

6) Radioactive mineral occurrences of Colorado and bibliography

Author
Nelson-Moore, James L
Series
Bulletin volume 40
Publisher
Colorado Geological Survey
Pub. Date
1978.

7) Map of Colorado uranium and vanadium mining and milling activities

Author
Collier, James D
Series
Map volume 11
Publisher
Colorado Geological Survey
Pub. Date
1978.