[Code of Federal Regulations]

[Title 30, Volume 1]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 30CFR57.22220]



[Page 411]

 

                       TITLE 30--MINERAL RESOURCES

 

  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR

 

PART 57_SAFETY AND HEALTH STANDARDS_UNDERGROUND METAL AND NONMETAL MINES

--Table of Contents

 

   Subpart T_Safety Standards for Methane in Metal and Nonmetal Mines

 

Sec.  57.22220  Air passing unsealed areas (I-A, II-A, III, and V-A 

mines).



    Air that has passed by or through unsealed abandoned or unsealed 

inactive areas and contains 0.25 percent or more methane shall--

    (a) Be coursed directly to a return airway;

    (b) Be tested daily for methane by a competent person; and

    (c) Not be used to ventilate work places.