Author: | Rad, Parviz F. |
---|---|
Additional Authors: | Olson, Richard C. |
Year: | 1974 |
Document Type: | BMRA |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | I 28.23:7881 |
Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
Report Number: | 7881 |
Subjects: | Mining machinery |
Boring machinery | |
Tunneling--Equipment and supplies | |
Link: | https://hdl.handle.net/2027/mdp.39015078539148 |