§75.205. Installation of roof support using mining machines with integral roof bolters.
30 C.F.R. § 75.205
When roof bolts are installed by a continuous mining machine with integral roof bolting equipment:
The distance between roof bolts shall not exceed 10 feet crosswise.
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.
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.
Notes, amendments, and revision history
Source
Source: 53 FR 2375, Jan. 27, 1988, unless otherwise noted.
Authority
Authority: 30 U.S.C. 811, 813(h), 957.
Source
Source: 35 FR 17890, Nov. 20, 1970, unless otherwise noted.