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title 30
Mineral Resources
chapter I
CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
part 57
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
subpart F
Subpart F—Drilling and Rotary Jet Piercing
subjgrp 173
Drilling—Surface and Underground
§ 57.7056
Collaring in bootlegs.
View all text of Subjgrp 173 [§ 57.7050 - § 57.7056]
§ 57.7056 - Collaring in bootlegs.
Holes shall not be collared in bootlegs.
[56 FR 46517, Sept. 12, 1991]