---
kind: "section"
citation: "30 C.F.R. § 77.404"
title: "30"
number: "77.404"
heading: "Machinery and equipment; operation and maintenance."
url: "https://uscodex.org/cfr/30/77.404"
---

# §77.404. Machinery and equipment; operation and maintenance.

- (a) Mobile and stationary machinery and equipment shall be maintained in safe operating condition and machinery or equipment in unsafe condition shall be removed from service immediately.
- (b) Machinery and equipment shall be operated only by persons trained in the use of and authorized to operate such machinery or equipment.
- (c) Repairs or maintenance shall not be performed on machinery until the power is off and the machinery is blocked against motion, except where machinery motion is necessary to make adjustments.
- (d) Machinery shall not be lubricated while in motion where a hazard exists, unless equipped with extended fittings or cups.

## Notes

### Authority

Authority: 30 U.S.C. 811.

### Source

Source: 36 FR 9364, May 22, 1971, unless otherwise noted.