CFR > Title 30 - Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER O—COAL MINE SAFETY AND HEALTH (parts 70 to 90) > PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES > SUBPART K—Ground Control (§77.1000 to §77.1013) > 77.1010—Collaring holes.

77.1010—Collaring holes.

(a) Starter steels shall be used when collaring holes with hand-held drills.
(b) Men shall not hold the drill steel while collaring holes, or rest their hands on the chuck or centralizer while drilling.