Rock dust composition, 30 C.F.R [section] 75.2
Series: Program information bulletin -- no. P11-50; Program information bulletin -- no. P11-50.
Publisher: U.S. Dept. Labor, Mine Safety and Health Administration
Published: 2011
Place of publication: Arlington, Va
Language: eng
Format: [electronic resource]
Subjects: Mineral dusts; Safety measures; Coal mines and mining
Notes: Title from title screen (viewed on Feb. 14, 2012).

"Issue date: Oct 27, 2011"