Collapsible drill steel enclosure for reducing roof bolting machine drilling noise.

Other author National Institute for Occupational Safety and Health.
Format Electronic
Publication Info[Pittsburgh, PA] : Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, [2008]
Description1 online resource ([2] p.) : col. ill.
Supplemental Contenthttps://purl.fdlp.gov/GPO/gpo19691
Subjects

SeriesTechnology news ; no. 532
DHHS (NIOSH) publication ; no. 2008-146
Technology news (National Institute for Occupational Safety and Health) ; no. 532. ^A783634
DHHS publication no. (NIOSH) 2008-146. ^A8861
General noteTitle from PDF caption (viewed Mar. 6, 2012).
General note"September 2008."
General noteGPO Cataloging Record Distribution Program (CRDP).
GPO item number0499-F-27 (online)
Govt. docs number HE 20.7132/2:532