Ventilation

Sections

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