30 CFR Part 57Public Domain
§ 57.19026 — Drum end attachment
Subpart R — Personnel Hoisting
(a)For drum end attachment, wire rope shall be attached—
(1)Securely by clips after making one full turn around the drum spoke;
(2)Securely by clips after making one full turn around the shaft, if the drum is fixed to the shaft; or
(3)By properly assembled anchor bolts, clamps, or wedges, provided that the attachment is a design feature of the hoist drum. Design feature means either the manufacturer's original design or a design approved by a registered professional engineer.
(b)A minimum of three full turns of wire rope shall be on the drum when the rope is extended to its maximum working length.
Public Domain: 30 CFR Part 57 (MSHA Safety and Health Standards — Underground Metal and Nonmetal Mines) is a U.S. government publication and is not subject to copyright. Text extracted from the official source ↗. Figures are served from the eCFR; if one does not load, use the link in its place.