Methods, costs, and safety in stripping and mining coal, copper ore, iron ore, bauxite, and pebble phosphate.

Bibliographic Details

Other Authors:	Cash, Frank E., Von Bernewitz, M. W.
Format:	Government Document eBook
Language:	English
Published:	[Washington?] : U.S. Government Printing Office, 1929.
Series:	Mines Bur. Bull. No. 298
Subjects:	Mines and mineral resources. Electronic books.
Online Access:	Connect to the full text of this electronic document