Effect of symmetric bit wear and attack angle on airborne respirable dust and energy consumption
By: by Bruce D. Hanson and Wallace W. Roepke
Contributors: Roepke, Wallace W., joint author; United States. Bureau of Mines
Series: Report of investigations - Bureau of Mines ; 8395
Publisher: Dept. of the Interior, Bureau of Mines
Published: 1979
Place of publication: [Washington]
Language: eng
Number of pages: 24
Subjects: Bits (Drilling and boring); Coal-mining machinery; Coal mines and mining -- Dust control
Notes: Bibligraphy: p. 12