Open-cut metal mining
By: by E. D. Gardner and McHenry Mosier.
Contributors: Mosier, McHenry, joint author.
Series: United States Bureau of mines. Bulletin 433
Publisher: U.S. Govt. print. off.
Published: 1941
Place of publication: Washington
Language: eng
Number of pages: 176
Subjects: Mining engineering.; Mines and mineral resources -- United States.
Notes: At head of title: United States Dept. of the interior, Harold L. Ickes, secretary. Bureau of mines, R. R. Sayers, director.