Two-way communication and electronic tracking system : potential interference of RF electromagnetic fields with electric blasting circuits.

Bibliographic Details
Corporate Author:	United States. Mine Safety and Health Administration (Author)
Format:	Government Document eBook
Language:	English
Published:	[Arlington, Virginia : U.S. Department of Labor, Mine Safety and Health Administration], 2011.
Series:	Program policy letter ; no. P11-V-07.
Subjects:	Electronic monitoring in the workplace > Safety regulations > United States. Miners > Safety regulations > United States. Mine safety > Electric equipment > Safety regulations > United States.
Online Access:	https://purl.fdlp.gov/GPO/gpo36530

Description
Item Description:	Title from subject line (viewed on May 6, 2013). "Effective Date: 3/23/2011, Expiration Date: 3/31/2013 (Reissue of P09-V-13)."
Physical Description:	1 online resource (4 pages).