Re-issue of P97-24
Subtitle: portable methane detectors magnetically attached to mining machinery (the "gizmo")
Series: Program information bulletin -- no. P09-20; Program information bulletin -- no. P09-20.
Publisher: U.S. Dept. of Labor, Mine Safety and Health Administration
Published: 2009
Place of publication: Arlington, Va
Language: eng
Format: [electronic resource] :
Subjects: Mine gases; Measurement; Equipment and supplies; Safety measures; Methane; Coal mines and mining; Safety regulations; Equipment
Other titles: Portable methane detectors magnetically attached to mining machinery, the gizmo
Notes: Title from title screen (viewed on Oct. 31, 2011).

"Issue date 07/31/09."