CFR
- Title 1 - General Provisions
- Title 2 - Grants and Agreements
- Title 3 - The President
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- Title 5 - Administrative Personnel
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- Title 48 - Federal Acquisition Regulations System
- Title 49 - Transportation
- Title 50 - Wildlife and Fisheries
57.7055—Intersecting holes.
Holes shall not be drilled where there is a danger of intersecting a misfired hole or a hole containing explosives, blasting agents, or detonators.
Code of Federal Regulations
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