[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: 30CFR77.213]

[Page 605-606]
 
                       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. 77.213  Draw-off tunnel escapeways.

    When it is necessary for a tunnel to be closed at one end, an 
escapeway not less than 30 inches in diameter (or of the equivalent, if 
the escapeway does not have a circular cross section) shall be installed 
which extends from the closed end of the tunnel to a safe location on 
the surface; and, if the

[[Page 606]]

escapeway is inclined more than 30 degrees from the horizontal it shall 
be equipped with a ladder which runs the full length of the inclined 
portion of the escapeway.