Collapsible drill steel enclosure for reducing roof bolting machine drilling noise
Series: Technology news -- no. 532; DHHS (NIOSH) publication -- no. 2008-146; Technology news (National Institute for Occupational Safety and Health) -- no. 532.; DHHS publication -- no. (NIOSH) 2008-146.
Publisher: Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health
Published: 2008
Place of publication: Pittsburgh, PA]
Language: eng
Format: [electronic resource]
Subjects: Mine roof bolting; Equipment and supplies; Safety measures; Boring; Noise control; Noise induced Deafness; Prevention
Notes: Title from PDF caption (viewed Mar. 6, 2012).

"September 2008."