De-energizing a non-intrinsically safe automatic fire sensor and warning systems after a main mine fan stoppage.

Bibliographic Details
Corporate Author:	United States. Mine Safety and Health Administration
Format:	Government Document eBook
Language:	English
Published:	[Arlington, Va.] : [U.S. Dept. of the Interior, Mine Safety and Health Administration], [2011]
Series:	Program information bulletin ; no. P 11-51.
Subjects:	Coal-mining machinery > Safety regulations > United States. Coal mines and mining > United States > Safety measures. Mine ventilation > United States > Equipment and supplies > Safety measures.
Online Access:	https://purl.fdlp.gov/GPO/gpo19013

Description
Item Description:	Title from title screen (viewed on Feb. 14, 2012). "Issue date: 11/28/2011."
Physical Description:	1 online resource (3 pages).