§75.507. Power connection points.
30 C.F.R. § 75.507
Except where permissible power connection units are used, all power-connection points outby the last open crosscut shall be in intake air.
Notes, amendments, and revision history
Authority
Authority: 30 U.S.C. 811, 813(h), 957.
Source
Source: 35 FR 17890, Nov. 20, 1970, unless otherwise noted.