Stemming in Metal Mines. Progress Report 2 (open access)

Stemming in Metal Mines. Progress Report 2

Report issued by the U.S. Bureau of Mines on the progress made in metal-mine stemming. Different types of stemming methods and testing procedures are presented. This report includes tables, illustrations, and photographs.
Date: August 1940
Creator: Johnson, John A.; Agnew, Wing G. & Mosier, McHenry
System: The UNT Digital Library