Evolving Improvements in Underground Mining.
Pres At the 13th Min Eng Convention Sept 8-12 1976 :57 pages
This Bureau of Mines report discusses the exploration, development, and extraction methods and equipment applicable to underground mining. An appendix contains tables and illustrations that amplify the topics discussed in the text. Tables 1-9, inclusive, are mentioned in the discussion. The balance of the illustrations and tables covers design and other aspects of modern underground mining.
Pres. At the 13th Min. Eng. Convention, Sept. 8-12, 1976, Arequipa, Peru