1. Regulations
  2. title 30
  3. chapter I
  4. part 57
  5. subpart T
  6. subjgrp 206
  7. § 57.22217

View all text of Subjgrp 206 [§ 57.22201 - § 57.22241]

§ 57.22217 - Seals and stoppings (I-A, I-B, and I-C mines).

All seals, and those stoppings that separate main intake from main return airways, shall be of substantial construction and constructed of noncombustible materials, except that stoppings constructed of brattice materials may be used in face areas.

AUTHORITY: 30 U.S.C. 811.

SOURCE: 50 FR 4082, Jan. 29, 1985, unless otherwise noted.

CITE AS: 30 CFR 57.22217