Regulatory Text
30 C.F.R. § 75.521 — Lightning arresters; ungrounded and exposed power conductors and telephone wires.
§ 75.521 Lightning arresters; ungrounded and exposed power conductors and telephone wires. Each ungrounded, exposed power conductor and each ungrounded, exposed telephone wire that leads underground shall be equipped with suitable lightning arresters of approved type within 100 feet of the point where the circuit enters the mine. Lightning arresters shall be connected to a low resistance grounding medium on the surface which shall be separated from neutral grounds by a distance of not less than 25 feet. [38 FR 4975, Feb. 23, 1973]
Source: ecfr.gov · govinfo.gov — public domain
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Root-LD v1.0 · boisestandard.org
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BS-CFR30-SEC-EA5F69
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REGULATION / FEDERAL-CFR-SECTION
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boisestandard.org
Citation
30 C.F.R. § 75.521
Corpus
CFR — Code of Federal Regulations
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✓ ACTIVE
Source
PRIMARY-SOURCE
Source Verified
✓ TRUE
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The regulatory text of 30 C.F.R. § 75.521 is reproduced from the official Code of Federal Regulations as published by the Office of the Federal Register and the National Archives and Records Administration.
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Title 30 — Mineral Resources
30 C.F.R. § 1.130 C.F.R. § 1.230 C.F.R. § 1.330 C.F.R. § 3.130 C.F.R. § 5.1030 C.F.R. § 5.3030 C.F.R. § 5.4030 C.F.R. § 5.5030 C.F.R. § 6.130 C.F.R. § 6.230 C.F.R. § 6.1030 C.F.R. § 6.2030 C.F.R. § 6.3030 C.F.R. § 7.130 C.F.R. § 7.230 C.F.R. § 7.330 C.F.R. § 7.430 C.F.R. § 7.530 C.F.R. § 7.630 C.F.R. § 7.730 C.F.R. § 7.830 C.F.R. § 7.930 C.F.R. § 7.1030 C.F.R. § 7.2130 C.F.R. § 7.2230 C.F.R. § 7.2330 C.F.R. § 7.2430 C.F.R. § 7.2530 C.F.R. § 7.2630 C.F.R. § 7.27
30 C.F.R. — public domain
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