[Code of Federal Regulations]
[Title 30, Volume 1]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 30CFR77.211]

[Page 605]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 77--MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES--Table of Contents
 
                    Subpart C--Surface Installations
 
Sec. 77.211  Draw-off tunnels; stockpiling and reclaiming operations; general.

    (a) Tunnels located below stockpiles, surge piles, and coal storage 
silos shall be ventilated so as to maintain concentrations of methane 
below 1.0 volume per centum.
    (b) In addition to the tests for methane required by Sec. 77.201 
such tests shall also be made before any electric equipment is energized 
or repaired, unless equipped with a continuous methane monitoring device 
installed and operated in accordance with the provisions of Sec. 77.211-
1. Electric equipment shall not be energized, operated, or repaired 
until the air contains less than 1.0 volume per centum of methane.