Diamond drilling blast holes, Bell Mine, the Warner Co., Centre County, Pa.

Author: Mosier, McHenry.
Year: 1948
Document Type: USBI
Issuing Agency: Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:7429
Series: Information circular / United States. Bureau of Mines ;
Report Number: 7429
Subjects: Diamond bits
Mineral industries--Pennsylvania
Link: https://hdl.handle.net/2027/mdp.39015077577420

< New search