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|
Sand and gravel excavation.
| Author: | Thoenen, J. R. |
|---|---|
| Year: | 1935 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:6856 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 6856 |
| Subjects: | Excavating machinery |
| Sand | |
| Gravel | |
| Mine haulage | |
| Link: | https://hdl.handle.net/2027/mdp.39015074128474 |
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