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Code of Federal Regulations

Subpart D

Ventilation

75.300Scope.75.301Definitions.75.302Main mine fans.75.310Installation of main mine fans.75.311Main mine fan operation.75.312Main mine fan examinations and records.75.313Main mine fan stoppage with persons underground.75.320Air quality detectors and measurement devices.75.321Air quality.75.322Harmful quantities of noxious gases.75.323Actions for excessive methane.75.324Intentional changes in the ventilation system.75.325Air quantity.75.326Mean entry air velocity.75.327Air courses and trolley haulage systems.75.330Face ventilation control devices.75.331Auxiliary fans and tubing.75.332Working sections and working places.75.333Ventilation controls.75.334Worked-out areas and areas where pillars are being recovered.75.335Seal strengths, design applications, and installation.75.336Sampling and monitoring requirements.75.337Construction and repair of seals.75.338Training.75.339Seals records.75.340Underground electrical installations.75.341Direct-fired intake air heaters.75.342Methane monitors.75.343Underground shops.75.344Compressors.75.350Belt air course ventilation.75.351Atmospheric monitoring systems.75.352Actions in response to AMS malfunction, alert, or alarm signals.75.360Preshift examination at fixed intervals.75.361Supplemental examination.75.362On-shift examination.75.363Hazardous conditions and violations of mandatory health or safety standards; posting, correcting, and recording.75.364Weekly examination.75.370Mine ventilation plan; submission and approval.75.371Mine ventilation plan; contents.75.372Mine ventilation map.75.373Reopening mines.75.380Escapeways; bituminous and lignite mines.75.381Escapeways; anthracite mines.75.382Mechanical escape facilities.75.384Longwall and shortwall travelways.75.385Opening new mines.75.386Final mining of pillars.75.388Boreholes in advance of mining.75.389Mining into inaccessible areas.