Additional Authors: | Agnew, Wing G., Gabriel, Alton., Chayes, Felix., Long, Albert., Obert, Leonard, |
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Year: | 1947 |
Document Type: | BMRA |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | I 28.23:4041 |
Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
Report Number: | 4041, 4233 |
Subjects: | Diamond bits--Testing |
Granite | |
Boring | |
Link: | https://hdl.handle.net/2027/mdp.39015078496836 |