Subjgrp 207. Equipment
- § 57.22301 - Atmospheric monitoring systems (I-A, II-A, and V-A mines).
- § 57.22302 - Approved equipment (I-A and V-A mines).
- § 57.22303 - Approved equipment (I-C mines).
- § 57.22304 - Approved equipment (II-A mines).
- § 57.22305 - Approved equipment (III mines).
- § 57.22306 - Methane monitors (I-A mines).
- § 57.22307 - Methane monitors (II-A mines).
- § 57.22308 - Methane monitors (III mines).
- § 57.22309 - Methane monitors (V-A mines).
- § 57.22310 - Electrical cables (I-C mines).
- § 57.22311 - Electrical cables (II-A mines).
- § 57.22312 - Distribution boxes (II-A and V-A mines).
- § 57.22313 - Explosion-protection systems (I-C mines).
- § 57.22314 - Flow-control devices (V-A and V-B mines).
- § 57.22315 - Self-contained breathing apparatus (V-A mines).