Sinking practice and costs at Pim shaft, St. Louis Smelting and Refining Works of National Lead Company, St. Francois, Mo.

Bibliographic Details

Corporate Author:	National Lead Company
Other Authors:	Poston, Roy H.
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : [publisher not identified], 1932.
Series:	Mines Bur. Info. Circ. No. 6588
Subjects:	Shaft sinking. Electronic books.
Online Access:	Connect to the full text of this electronic document