Code of Federal Regulations (Last Updated: November 8, 2024) |
Title 30 - Mineral Resources |
Chapter I - Mine Safety and Health Administration, Department of Labor |
SubChapter K - Metal and Nonmetal Mine Safety and Health |
Part 57 - Safety and Health Standards - Underground Metal and Nonmetal Mines |
Subpart E - Explosives |
Use - Surface and Underground |
§ 57.6303 - Initiation preparation.
Latest version.
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§ 57.6303 Initiation preparation.
(a) Primers shall be made up only at the time of use and as close to the blast site as conditions allow.
(b) Primers shall be prepared with the detonator contained securely and completely within the explosive or contained securely and appropriately for its design in the tunnel or cap well.
(c) When using detonating cord to initiate another explosive, a connection shall be prepared with the detonating cord threaded through, attached securely to, or otherwise in contact with the explosive.