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Clay-mining methods and costs at the Corunna (Mich.) pit of the Aetna Portland Cement Co.
| Author: | Dibble, O. A. |
|---|---|
| Year: | 1932 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of commerce, Bureau of Mines, |
| SUDOC: | C 22.11:6657 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 6657 |
| Subjects: | Clay industries--Michigan |
| Clay mines and mining--Michigan | |
| Link: | https://hdl.handle.net/2027/mdp.39015086485748 |
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