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| Drilling—Underground Only | 57.7028 – 57.7032 | |||||||
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50 FR 4082, Jan. 29, 1985, unless otherwise noted.
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Subscribe to: 30 CFR Part 57 Subpart F - Drilling—Underground Only
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Persons shall not rest their hands on the chuck or centralizer while drilling.
Columns and the drills mounted on them shall be anchored firmly before and during drilling.