Gold mining and milling methods and costs at Vallecito Western drift mine, Angels Camp, Calif.

Bibliographic Details

Other Authors:	Steffa, Don
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : [publisher not identified], 1932.
Series:	Mines Bur. Info. Circ. No. 6612
Subjects:	Gold mines and mining. Electronic books.
Online Access:	Connect to the full text of this electronic document