1. Regulations
  2. title 30
  3. chapter I
  4. part 57
  5. subpart R
  6. subjgrp 200
  7. § 57.19090

View all text of Subjgrp 200 [§ 57.19090 - § 57.19096]

§ 57.19090 - Dual signaling systems.

There shall be at least two effective approved methods of signaling between each of the shaft stations and the hoist room, one of which shall be a telephone or speaking tube.

AUTHORITY: 30 U.S.C. 811.

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

CITE AS: 30 CFR 57.19090