Mineral issues--1989

Mineral issues--1989

4.11 - 1251 ratings - Source

Although diesel shuttle cars in underground coal mines can increase productivity, they have significantly higher capital and operating costs than either battery- powered or electric cars. In particular, the more stringent maintenance of theanbsp;...

Title:Mineral issues--1989
Author:Keith L. Harris, United States. Bureau of Mines
Publisher: - 1989


You Must CONTINUE and create a free account to access unlimited downloads & streaming