---
kind: "section"
citation: "30 C.F.R. § 57.22304"
title: "30"
number: "57.22304"
heading: "Approved equipment (II-A mines)."
url: "https://uscodex.org/cfr/30/57.22304"
---

# §57.22304. Approved equipment (II-A mines).

- (a) Cutting and drilling equipment used at a face or bench shall be approved by MSHA under the applicable requirements of 30 CFR parts [18](/cfr/30/part18.md) through [36](/cfr/30/part36.md).
- (b) While cutting or drilling is in progress, equipment not approved by MSHA under the applicable requirements of 30 CFR parts [18](/cfr/30/part18.md) through [36](/cfr/30/part36.md) shall remain at least 100 feet from the face or bench being mined.
- (c) Tests for methane shall be conducted immediately before nonapproved equipment is taken to a face or bench after blasting.
- (d) Mine power transformers and stationary equipment not approved by MSHA under the applicable requirements of 30 CFR parts [18](/cfr/30/part18.md) through [36](/cfr/30/part36.md) shall be installed in fresh air or downwind from an atmospheric methane monitor sensor.

## Notes

### Authority

Authority: 30 U.S.C. 811.

### Source

Source: 52 FR 24941, July 1, 1987, unless otherwise noted.

### Authority

Authority: 30 U.S.C. 811.

### Source

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