Respirable dust levels in coal, metal, and nonmetal mines
By: by W.F. Watts, Jr., and D.R. Parker.
Contributors: Parker, D. R.
Series: Information circular ;; 9125; Information circular (United States. Bureau of Mines);; 9125.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1987
Place of publication: Pittsburgh, Pa
Language: eng
Number of pages: 23
Subjects: Mine dusts -- United States -- Standards.; Coal mines and mining -- Dust control -- Standards -- United States.
Notes: Bibliography: p. 18.