| Additional Authors: | Glidden, Zelda S., Kearney, Naomi W., Wrenn, Virginia E., Machisak, John C. | 
|---|---|
| Year: | 1962 | 
| Document Type: | USBI | 
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, | 
| SUDOC: | I 28.27:8077 | 
| Series: | Information circular / Bureau of Mines ; | 
| Report Number: | 8077 | 
| Subject: | Quarries and quarrying--Accidents--Statistics | 
| Link: | https://hdl.handle.net/2027/mdp.39015078461913 |