---
kind: "section"
citation: "30 C.F.R. § 57.19024"
title: "30"
number: "57.19024"
heading: "Retirement criteria."
url: "https://uscodex.org/cfr/30/57.19024"
---

# §57.19024. Retirement criteria.


Unless damage or deterioration is removed by cutoff, wire ropes shall be removed from service when any of the following conditions occurs:

- (a) **The number of broken wires within a rope lay length, excluding filler wires, exceeds either—**
  - (1) Five percent of the total number of wires; or
  - (2) **Fifteen percent of the total number of wires within any strand.**
- (b) **On a regular lay rope, more than one broken wire in the valley between strands in one rope lay length.**
- (c) **A loss of more than one-third of the original diameter of the outer wires.**
- (d) **Rope deterioration from corrosion.**
- (e) **Distortion of the rope structure.**
- (f) **Heat damage from any source.**
- (g) **Diameter reduction due to wear that exceeds six percent of the baseline diameter measurement.**
- (h) **Loss of more than ten percent of rope strength as determined by nondestructive testing.**

## Notes

### Authority

Authority: Sec. 101, Federal Mine Safety and Health Act of 1977, Pub. L. 91-173 as amended by Pub. L. 95-164, 91 Stat. 1291 (30 U.S.C. 811).

### Authority

Authority: 30 U.S.C. 811.

### Source

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