| Author: | Sheridan, Matthew J. |
|---|---|
| Year: | 1967 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Bureau of Mines, |
| SUDOC: | i 28.27:8320 |
| Series: | Information circular / United States. Bureau of Mines ; |
| Report Number: | 8320 |
| Subjects: | Aggregates (Building materials) |
| Mineral industries--Colorado | |
| Link: | https://hdl.handle.net/2027/mdp.39015078514562 |