Shaft-sinking practices and costs.

Bibliographic Details

Other Authors:	Gardner, E. D. (Eugene Delos), 1885-, Johnson, J. Fred (John Frederick), 1887-
Format:	Government Document eBook
Language:	English
Published:	[Washington?] : U.S. Government Printing Office, 1932.
Series:	Mines Bur. Bull. No. 357
Subjects:	Mines and mineral resources. Electronic books.
Online Access:	Connect to the full text of this electronic document