2 options
Pillar recovery design, technologies, and procedures in roof control plan reviews.
- Format:
- Book
- Government document
- Series:
- Procedure instruction letter ; no. I12-V-02.
- Procedure instruction letter ; no. I12-V-02
- Language:
- English
- Subjects (All):
- Mine safety--United States.
- Mine safety.
- Barrier pillars--Safety measures.
- Barrier pillars.
- United States.
- Genre:
- Online resources.
- Physical Description:
- 1 online resource (5 pages).
- Place of Publication:
- Arlington, Virginia : U.S. Department of Labor, Mine Safety and Health Administration, 2012.
- Notes:
- "Effective date: 02/16/2012; expiration date: 03/21/2014."
- Online resource; title from PDF title page (MSHA, viewed May 17, 2017).
- Other Format:
- Print version: Pillar recovery design, technologies, and procedures in roof control plan reviews
- OCLC:
- 987379266
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