[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: 30CFR75.326]

[Page 476]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 75--MANDATORY SAFETY STANDARDS--UNDERGROUND COAL MINES--Table of Contents
 
                         Subpart D--Ventilation
 
Sec. 75.326  Mean entry air velocity.

    In exhausting face ventilation systems, the mean entry air velocity 
shall be at least 60 feet per minute reaching each working face where 
coal is being cut, mined, drilled for blasting, or loaded, and to any 
other working places as required in the approved ventilation plan. A 
lower mean entry air velocity may be approved in the ventilation plan if 
the lower velocity will maintain methane and respirable dust 
concentrations in accordance with the applicable levels. Mean entry air 
velocity shall be determined at or near the inby end of the line 
curtain, ventilation tubing, or other face ventilation control devices.

[61 FR 9828, Mar. 11, 1996; 61 FR 29288, June 10, 1996]