Mining methods and costs at Engels mine, Plumas County, Calif.

Bibliographic Details

Corporate Author:	Engels Copper Mining Co
Other Authors:	Nelson, W. I.
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : [publisher not identified], 1930.
Series:	Mines Bur. Info. Circ. No. 6260
Subjects:	Mines and mineral resources. Electronic books.
Online Access:	Connect to the full text of this electronic document