U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 31, 2025

All TitlesTitle 30Chapter IPart 57Subpart T - Subpart T—Safety Standards for Methane in Metal and Nonmetal Mines

GENERAL
§ 57.22001 - Scope.
§ 57.22002 - Definitions.

MINE CATEGORIZATION
§ 57.22003 - Mine category or subcategory.
§ 57.22004 - Category placement or change in placement.
§ 57.22005 - Notice and appeal of placement or change in placement.

FIRE PREVENTION AND CONTROL
VENTILATION
§ 57.22201 - Mechanical ventilation (I-A, I-B, I-C, II-A, II-B, III, IV, V-A, and V-B mines).
§ 57.22202 - Main fans (I-A, I-B, I-C, II-A, III, V-A, and V-B mines).
§ 57.22203 - Main fan operation (I-C mines).
§ 57.22204 - Main fan operation and inspection (I-A, II-A, III, and V-A mines).
§ 57.22205 - Doors on main fans (I-A, II-A, III, and V-A mines).
§ 57.22206 - Main ventilation failure (I-A, II-A, III, and V-A mines).
§ 57.22207 - Booster fans (I-A, II-A, III, and V-A mines).
§ 57.22208 - Auxiliary fans (I-A, II-A, III, and V-A mines).
§ 57.22209 - Auxiliary fans (I-C mines).
§ 57.22210 - In-line filters (I-C mines).
§ 57.22211 - Air flow (I-A mines).
§ 57.22212 - Air flow (I-C, II-A, and V-A mines).
§ 57.22213 - Air flow (III mines).
§ 57.22214 - Changes in ventilation (I-A, II-A, III, and V-A mines).
§ 57.22215 - Separation of intake and return air (I-A, II-A, III, and V-A mines).
§ 57.22216 - Separation of intake and return air (I-C mines).
§ 57.22217 - Seals and stoppings (I-A, I-B, and I-C mines).
§ 57.22218 - Seals and stoppings (III, V-A, and V-B mines).
§ 57.22219 - Seals and stoppings (II-A mines).
§ 57.22220 - Air passing unsealed areas (I-A, II-A, III, and V-A mines).
§ 57.22221 - Overcast and undercast construction (I-A, II-A, III, and V-A mines).
§ 57.22222 - Ventilation materials (I-A, I-B, I-C, II-A, III, V-A, and V-B mines).
§ 57.22223 - Crosscuts before abandonment (III mines).
§ 57.22224 - Auxiliary equipment stations (I-A and III mines).
§ 57.22225 - Auxiliary equipment stations (I-C mines).
§ 57.22226 - Testing for methane (IV mines).
§ 57.22227 - Approved testing devices (I-A, I-B, I-C, II-A, II-B, III, IV, V-A, and V-B mines).
§ 57.22228 - Preshift examination (I-A, I-C, II-A, III, and V-A mines).
§ 57.22229 - Weekly testing (I-A, III, and V-A mines).
§ 57.22230 - Weekly testing (II-A mines).
§ 57.22231 - Actions at 0.25 percent methane (I-B, II-B, V-B, and VI mines).
§ 57.22232 - Actions at 0.5 percent methane (I-B, II-A, II-B, IV, V-B, and VI mines).
§ 57.22233 - Actions at 0.5 percent methane (I-C mines).
§ 57.22234 - Actions at 1.0 percent methane (I-A, I-B, III, V-A, and V-B mines).
§ 57.22235 - Actions at 1.0 percent methane (I-C, II-A, II-B, and IV mines).
§ 57.22236 - Actions at 1.0 percent methane (VI mines).
§ 57.22237 - Actions at 2.0 to 2.5 percent methane in bleeder systems (I-A and III mines).
§ 57.22238 - Actions at 2.0 percent methane (I-B, II-B, V-B, and VI mines).
§ 57.22239 - Actions at 2.0 percent methane (IV mines).
§ 57.22240 - Actions at 2.0 percent methane (V-A mines).
§ 57.22241 - Advance face boreholes (I-C mines).
§ 57.22101 - Smoking (I-A, II-A, III, and V-A mines).
§ 57.22102 - Smoking (I-C mines).
§ 57.22103 - Open flames (I-A, II-A, III, and V-A mines).
§ 57.22104 - Open flames (I-C mines).
§ 57.22105 - Smoking and open flames (IV mines).
§ 57.22106 - Dust containing volatile matter (I-C mines).

EQUIPMENT
§ 57.22301 - Atmospheric monitoring systems (I-A, II-A, and V-A mines).
§ 57.22302 - Approved equipment (I-A and V-A mines).
§ 57.22303 - Approved equipment (I-C mines).
§ 57.22304 - Approved equipment (II-A mines).
§ 57.22305 - Approved equipment (III mines).
§ 57.22306 - Methane monitors (I-A mines).
§ 57.22307 - Methane monitors (II-A mines).
§ 57.22308 - Methane monitors (III mines).
§ 57.22309 - Methane monitors (V-A mines).
§ 57.22310 - Electrical cables (I-C mines).
§ 57.22311 - Electrical cables (II-A mines).
§ 57.22312 - Distribution boxes (II-A and V-A mines).
§ 57.22313 - Explosion-protection systems (I-C mines).
§ 57.22314 - Flow-control devices (V-A and V-B mines).
§ 57.22315 - Self-contained breathing apparatus (V-A mines).

UNDERGROUND RETORTS
§ 57.22401 - Underground retorts (I-A and I-B mines).

ILLUMINATION
§ 57.22501 - Personal electric lamps (I-A, I-B, I-C, II-A, II-B, III, IV, V-A, and V-B mines).

EXPLOSIVES
§ 57.22601 - Blasting from the surface (I-A mines).
§ 57.22602 - Blasting from the surface (I-C mines).
§ 57.22603 - Blasting from the surface (II-A mines).
§ 57.22604 - Blasting from the surface (II-B mines).
§ 57.22605 - Blasting from the surface (V-A mines).
§ 57.22606 - Explosive materials and blasting units (III mines).
§ 57.22607 - Blasting on shift (III mines).
§ 57.22608 - Secondary blasting (I-A, II-A, and V-A mines).
Appendix Appendix I - Appendix I to Subpart T of Part 57—Standard Applicability by Category or Subcategory
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