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Code of Federal Regulations (Last Updated: April 5, 2024) |
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Title 30 - Mineral Resources |
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Chapter I - Mine Safety and Health Administration, Department of Labor |
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SubChapter O - Coal Mine Safety and Health |
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Part 75 - Mandatory Safety Standards - Underground Coal Mines |
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Subpart N - Explosives and Blasting |
§ 75.1317 - Primer cartridges.
Latest version.
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§ 75.1317 Primer cartridges.
(a) Primer cartridges shall be primed and loaded only by a qualified person or a person working in the presence of and under the direction of a qualified person.
(b) Primer cartridges shall not be primed until immediately before loading boreholes.
(c) Only a nonsparking punch shall be used when priming explosive cartridges.
(d) Detonators shall be completely within and parallel to the length of the cartridge and shall be secured by half-hitching the leg wires around the cartridge or secured by an equally effective method.