30 CFR 250.404 - What are the requirements for the crown block?

Regulations last checked for updates: Feb 10, 2026

Title 30 - Mineral Resources last revised: Jan 27, 2026

View all text of Subpart D [§ 250.400 - § 250.490]

§ 250.404 - What are the requirements for the crown block?

You must have a crown block safety device that prevents the traveling block from striking the crown block. You must check the device for proper operation at least once per week and after each drill-line slipping operation and record the results of this operational check in the driller's report.

authority: 30 U.S.C. 1751,31.S.C. 9701, 33 U.S.C. 1321(j)(1)(C), 43 U.S.C. 1334.

source: 76 FR 64462, Oct. 18, 2011, unless otherwise noted.

cite as: 30 CFR 250.404