[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: 30CFR75.205]

[Page 461]
 
                       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 C--Roof Support
 
Sec. 75.205  Installation of roof support using mining machines with integral roof bolters.

    When roof bolts are installed by a continuous mining machine with 
intregal roof bolting equipment:
    (a) The distance between roof bolts shall not exceed 10 feet 
crosswise.
    (b) Roof bolts to be installed 9 feet or more apart shall be 
installed with a wooden crossbar at least 3 inches thick and 8 inches 
wide, or material which provides equivalent support.
    (c) Roof bolts to be installed more than 8 feet but less than 9 feet 
apart shall be installed with a wooden plank at least 2 inches thick and 
8 inches wide, or material which provides equivalent support.