30 CFR Subpart D
Machines Assembled With Certified or Explosion-Proof Components, Field Modifications of Approved Machines, and Permits To Use Experimental Equipment
May 28, 2026
§
18.80
Approval of machines assembled with certified or explosion-proof components
§
18.81
Field modification of approved (permissible) equipment; application for approval of modification; approval of plans for modification before modification
§
18.82
Permit to use experimental electric face equipment in a gassy mine or tunnel
Appendix
Appendix I to Subpart D of Part 18
Appendix I to Subpart D of Part 18
Appendix
Appendix II to Subpart D of Part 18
Appendix II to Subpart D of Part 18
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