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Collapsible drill steel enclosure for reducing roof bolting machine drilling noise

[Pittsburgh, PA] : Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, [2008] 2008

Controlled start for drill motors on roof bolting machines

[Pittsburgh, PA] : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, [2000] 2000

Potential safety hazard on J.H. Fletcher & Co. roof bolting machines with independent left and right

[Pittsburgh, Pa. : U.S. Dept. of Labor, Mine Safety and Health Administration, Pittsburgh Safety & Health Technology Center 2009] 2009

Re-issue of P08-13 use of single-boom roof bolting machines.

[Arlington, Va. : U.S. Dept. of Labor, Mine Safety and Health Administration, 2011] 2011

Re-issue of P09-26 potential hazard to roof bolting machine operators due to inadvertent control act

[Arlington, Va. : U.S. Dept. of Labor, Mine Safety and Health Administration, 2011] 2011

Use of single-boom roof bolting machines

[Arlington, Va. : U.S. Dept. of Labor, Mine Safety and Health Administration, 2008] 2008