StacksVerified U.S. regulatory reference

30 CFR §77.1010

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Starter steels shall be used when collaring holes with hand-held drills.
  2. (b)Men shall not hold the drill steel while collaring holes, or rest their hands on the chuck or centralizer while drilling.