Method and cost of mining at Barr mine, Tri-State zinc and lead district.

Bibliographic Details

Other Authors:	Keener, Oliver W.
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : [publisher not identified], 1929.
Series:	Mines Bur. Info. Circ. No. 6159
Subjects:	Mines and mineral resources. Electronic books.
Online Access:	Connect to the full text of this electronic document