Effect of symmetric bit wear and attack angle on airborne respirable dust and energy consumption /

Bibliographic Details
Main Author:	Hanson, Bruce D.
Corporate Author:	United States. Bureau of Mines
Other Authors:	Roepke, Wallace W.
Format:	Government Document Book
Language:	English
Published:	[Washington] : Dept. of the Interior, Bureau of Mines, 1979.
Series:	Report of investigations (United States. Bureau of Mines) ; 8395.
Subjects:	Bits (Drilling and boring) Coal-mining machinery. Coal mines and mining > Dust control.

Evans: US Documents (Annex 5th floor)