| Author: | Kelley, John E. | 
|---|---|
| Additional Authors: | Blickensderfer, Robert, | 
| Year: | 1974 | 
| Document Type: | BMRA | 
| Issuing Agency: | U.S. Bureau of Mines, | 
| SUDOC: | I 28.23:7902 | 
| Series: | Report of investigations / Bureau of Mines ; | 
| Report Number: | 7902 | 
| Subjects: | Spark tests | 
| Metals--Testing | |
| Links: | https://hdl.handle.net/2027/mdp.39015077557851 | 
| https://hdl.handle.net/2027/mdp.39015078539809 |