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DOL/MSHA RIN: 1219-AA75 Publication ID: Fall 1999 
Title: Longwall Equipment (Including High-Voltage) 
Abstract: Our current regulations require that high-voltage cables and transformers be kept at least 150 feet from coal extraction areas. These requirements are intended to eliminate an ignition source for methane and coal dust in close proximity to the work area. Highly productive longwall mining systems are now in widespread use in the mining industry. They use safe high-voltage electrical equipment and associated cables. Mine operators, however, currently must apply to us for a variance from the existing regulations if they want to use this high-voltage equipment. The rule as proposed will eliminate the need for a variance to use this equipment and will establish safety requirements for the design, construction, installation, use, and maintenance of high-voltage longwall equipment and associated cables. 
Agency: Department of Labor(DOL)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 30 CFR 18    30 CFR 75   
Legal Authority: 30 USC 811    30 USC 957   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  08/27/1992  57 FR 39036   
NPRM Comment Period End  11/13/1992  57 FR 46350   
Reopen Record  10/18/1995  60 FR 53891   
Extension of Comment Period  11/14/1995  60 FR 57203   
Comment Period End  12/18/1995  60 FR 57203   
Reopen Record  11/00/1999    
Final Action  04/00/2000    
Regulatory Flexibility Analysis Required: Yes  Government Levels Affected: None 
Small Entities Affected: Businesses 
Included in the Regulatory Plan: No 
Agency Contact:
Marvin W. Nichols Jr.
Director, Office of Standards
Department of Labor
Mine Safety and Health Administration
Room 2352, 1100 Wilson Boulevard, Room 2350,
Arlington, VA 22209
Phone:202 693-9440
Fax:202 693-9441
Email: nichols-marvin@dol.gov