Cover Image

Roof bolt spacing.

Bibliographic Details
Corporate Author: United States. Mine Safety and Health Administration (Author)
Format: Government Document eBook
Language:English
Published: [Arlington, Va.] : [U.S. Department of Labor, Mine Safety and Health Administration], 2012.
Series:Procedure instruction letter ; no. I12-V-08.
Subjects:
Mine safety > Equipment and supplies > Safety regulations > United States.
Mine roof bolting > Safety measures.
Mine roof control > Safety regulations > United States.
Online Access:https://purl.fdlp.gov/GPO/gpo37863
Description
Item Description:Title from subject line (viewed on July 1, 2013).
"Effective Date: 04/19/2012, Expiration Date: 03/31/2014."
"Reissue of PIL I10-V-04."
Physical Description:1 online resource (2 pages).