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Ingested titles 12–51 and 54 from OLRC USLM XML @119-100 (the whole Code now, uniform edition; Title 53 is reserved/empty). LegalText 11,221 -> 59,740; repo total 105,704 records. Deterministic (byte-identical rerun, verified on Title 42's 8,356 sections); make check green. make legal-us-code default now covers every title. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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| LegalText | 30 U.S.C. § 867 | Grounding of equipment | us | united_states_code | code_section | 30 | MINERAL LANDS AND MINING | 22 | MINE SAFETY AND HEALTH | 867 | 30 U.S.C. § 867 | current | 119-100 | 2026-06-26 | official | https://uscode.house.gov/download/releasepoints/us/pl/119/100/xml_usc30@119-100.zip | /us/usc/t30/s867 | data/legal/raw/us/code/title-30/usc30.xml | 8443d9d88dc1511c2448a19e35d8cb907d1a3fb99156e069902df941b3cd061c | 355f8eb5c6ad5372de4a8e665d9ed90202d53d2aac19ac001d43948af4a4dd2f | cb650b13d71b298517b74cf00c476a7e8deaafd8d384c06e6b17098ad796dc60 | 2026-07-04 | official |
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30 U.S.C. § 867 - Grounding of equipment
Text
(a) Metallic enclosed power conductors; metallic frames and other equipment; methods All metallic sheaths, armors, and conduits enclosing power conductors shall be electrically continuous throughout and shall be grounded by methods approved by an authorized representative of the Secretary. Metallic frames, casings, and other enclosures of electric equipment that can become “alive” through failure of insulation or by contact with energized parts shall be grounded by methods approved by an authorized representative of the Secretary. Methods other than grounding which provide no less effective protection may be permitted by the Secretary or his authorized representative.
(b) Frames of offtrack direct current machines; enclosures of related detached components The frames of all offtrack direct current machines and the enclosures of related detached components shall be effectively grounded, or otherwise maintained at no less safe voltages, by methods approved by an authorized representative of the Secretary.
(c) Stationary high-voltage equipment powered by underground delta systems The frames of all stationary high-voltage equipment receiving power from ungrounded delta systems shall be grounded by methods approved by an authorized representative of the Secretary.
(d) Repairs of high-voltage lines; exceptions High-voltage lines, both on the surface and underground, shall be deenergized and grounded before work is performed on them, except that repairs may be permitted, in the case of energized surface high-voltage lines, if such repairs are made by a qualified person in accordance with procedures and safeguards, including, but not limited to a requirement that the operator of such mine provide, test, and maintain protective devices in making such repairs, to be prescribed by the Secretary prior to the operative date of this subchapter.
(e) Deenergizing of underground power circuits on idle days; exceptions When not in use, power circuits underground shall be deenergized on idle days and idle shifts, except that rectifiers and transformers may remain energized.
(Pub. L. 91–173, title III, § 307, Dec. 30, 1969, 83 Stat. 780.)
Notes
Editorial Notes
References in TextFor the operative date of this subchapter, referred to in subsec. (d), see section 509 of Pub. L. 91–173, set out as an Effective Date note under section 801 of this title.
Statutory Notes and Related Subsidiaries
Effective DateSection operative 90 days after Dec. 30, 1969, except to the extent an earlier date is specifically provided for in Pub. L. 91–173, see section 509 of Pub. L. 91–173, set out as a note under section 801 of this title.