---
kind: "section"
citation: "30 C.F.R. § 57.22226"
title: "30"
number: "57.22226"
heading: "Testing for methane (IV mines)."
url: "https://uscodex.org/cfr/30/57.22226"
---

# §57.22226. Testing for methane (IV mines).


Tests for methane shall be conducted in the mine atmosphere by a competent person—

- (a) At least once each shift prior to starting work in each face and raise; and
- (b) **Upon initial release of gas into the mine atmosphere from boreholes.**

## 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.