Title 30, Part 57 — Safety and Health Standards—underground Metal and Nonmetal Mines

Purpose and scope.

Definitions.

Notification of commencement of operations and closing of mines.

Definitions.

Correction of hazardous conditions.

Location for performing scaling.

Scaling tools.

Rock fixtures.

Ground support use.

Secondary breakage.

Examination of ground conditions.

Activity between machinery or equipment and the highwall or bank.

Maintenance between machinery or equipment and ribs.

Rock bursts.

Definitions.

Abandoned electric circuits.

Underground trailing cables.

Smoking and use of open flames.

Warning signs.

Spillage and leakage.

Fueling internal combustion engines.

Combustible waste.

Surface electric substations and liquid storage facilities.

Surface fan installations and mine openings.

Underground electric substations and liquid storage facilities.

Use of fire underground.

General requirements.

Inspection.

Fire hydrants.

Extinguisher recharging or replacement.

Surface self-propelled equipment.

Underground self-propelled equipment.

Shaft-station waterlines.

Underground transformer stations, combustible liquid storage and dispensing areas, pump rooms, compressor rooms, and hoist rooms.

Underground belt conveyors.

Surface firefighting, evacuation, and rescue procedures.

Surface firefighting drills.

Underground alarm systems.

Underground evacuation drills.

Underground rescue and firefighting operations.

Underground evacuation instruction.

Use restrictions.

Storage tank foundations.

Safety can use.

Surface storage facilities.

Surface storage restrictions.

Storage of flammable liquids underground.

Gasoline use restrictions underground.

Storage of combustible liquids underground.

Liquefied petroleum gas use underground.

Heat sources.

Fuel lines.

Battery-charging stations.

Conveyor belt slippage.

Fan installations.

Fuel lines to underground areas.

Exits for surface buildings and structures.

Surface flammable or combustible liquid storage buildings or rooms.

Blacksmith shops.

Mine opening vicinity.

Mine entrances.

Stationary diesel equipment underground.

Extinguishing equipment.

Oxygen cylinder storage.

Gauges and regulators.

Closure of valves.

Preparation of pipelines or containers.

Work in shafts, raises, or winzes and other activities involving hazard areas.

Shaft mines.

Underground shops.

Exposure limits for airborne contaminants.

Exposure limits for airborne contaminants.

Exposure monitoring.

Control of exposure to airborne contaminants.

Control of exposure to airborne contaminants.

Restricted use of chemicals.

Oxygen deficiency.

Radon daughter exposure monitoring.

Annual exposure limits.

Maximum permissible concentration.

Exposure records.

Smoking prohibition.

Revised exposure levels.

Respirators.

Posting of inactive workings.

Protection against radon gas.

Gamma radiation surveys.

Limit on exposure to diesel particulate matter.

Compliance determinations.

Fueling practices.

Maintenance standards.

Engines.

Miner training.

Exposure monitoring.

Diesel particulate records.

Definitions.

Separation of stored explosive material.

Areas around explosive material storage facilities.

Explosive material storage practices.

Explosive material storage facilities.

Location of explosive material storage facilities.

Magazine requirements.

Powder chests.

Main facilities.

Auxiliary facilities.

Delivery to storage or blast site areas.

Separation of transported explosive material.

Vehicles.

Locomotives.

Hoists.

Conveying explosives by hand.

Control of blasting operations.

Blasthole obstruction check.

Separation of explosive material.

Initiation preparation.

Primer protection.

Unused explosive material.

Loading, blasting, and security.

Drill stem loading.

Initiation systems.

Fuel oil requirements for ANFO.

Misfire waiting period.

Handling of misfires.

Secondary blasting.

Compatibility of electric detonators.

Shunting.

Deenergized circuits near detonators.

Branch circuits.

Separation of blasting circuits from power source.

Firing devices.

Duration of current flow.

Circuit testing.

Damaged initiating material.

Nonelectric initiation systems.

Safety fuse.

Loading practices.

Grounding.

Static electricity dissipation during loading.

Air gap.

Precautions during storms.

Isolation of blasting circuits.

Nonsparking tools.

Tamping and loading pole requirements.

Storage facilities.

Vehicle repair.

Bulk delivery vehicles.

Blasting lines.

Damaged or deteriorated explosive material.

Black powder.

Excessive temperatures.

Burning explosive material.

Smoking and open flames.

Protection of explosive material.

Mixing of explosive material.

Equipment defects.

Drill area inspection.

Drill mast.

Augers and drill stems.

Moving the drill.

Drill helpers.

Power failures.

Straightening crossed cables.

Tending drills in operation.

Covering or guarding drill holes.

Hand clearance.

Hand clearance.

Anchoring.

Tool and drill steel racks.

Loose objects on the mast or drill platform.

Drilling positions.

Moving hand-held drills.

Starting or moving drill equipment.

Intersecting holes.

Collaring in bootlegs.

Jet drills.

Oxygen hose lines.

Lighting the burner.

Refueling.

Smoking and open flames.

Oxygen intake coupling.

Flushing the combustion chamber.

Main and booster fans.

Underground main fan controls.

Ventilation plan.

Main fan maintenance.

Oxygen-deficiency testing.

Unventilated areas.

Auxiliary fan systems.

Construction and maintenance of ventilation doors.

Opening and closing ventilation doors.

Shutdown or failure of auxiliary fans.

Seals.

Traffic control.

Operating speeds and control of equipment.

Movement of independently operating rail equipment.

Clearance on adjacent tracks.

Railroad crossings.

Train movement during shift changes.

Transporting persons.

Loading, hauling, and unloading of equipment or supplies.

Loading and hauling large rocks.

Supplies, materials, and tools on mantrips.

Transporting tools and materials on locomotives.

Berms or guardrails.

Dump site restraints.

Protection against moving or runaway railroad equipment.

Construction of ramps and dumping facilities.

Unstable ground.

Truck spotters.

Warning devices for restricted clearances.

Design, installation, and maintenance of railroads.

Switch throws.

Chute design.

Chute hazards.

Anchoring stationary sizing devices.

Working around drawholes.

Roadway maintenance.

Trimming stockpile and muckpile faces.

Dust control.

Notifying the equipment operator.

Suspended loads.

Getting on or off moving equipment.

Going over, under, or between railcars.

Clearance for surface equipment.

Shelter holes.

Drawholes.

Protection of signalmen.

Filling buckets.

Inspection and maintenance.

Correction of defects.

Brakes.

Track cable connections.

Tower guards.

Falling object protection.

Riding tramways.

Riding loaded buckets.

Starting precautions.

Safe access.

Handrails and toeboards.

Construction and maintenance of ladders.

Portable rigid ladders.

Fixed ladder anchorage and toe clearance.

Fixed ladder landings.

Wooden components of ladders.

Restricted clearance.

Walkways along conveyors.

Stairstep clearance.

Use of ladders.

Protection for openings around travelways.

Conveyor crossovers.

Crossing moving conveyors.

Snow and ice on walkways and travelways.

Inclined fixed ladders.

Railed landings, backguards, and other protection for fixed ladders.

Protection for inclined fixed ladders.

Scaffolds and working platforms.

Ladderway trap doors and guards.

Ladderway openings.

Entering a manway.

Inclined travelways.

Landings for inclined ladderways.

Escapeways and refuges.

Escape routes.

Refuge areas.

Escape and evacuation plans.

Communication with refuge chambers.

Inclined escapeways.

Emergency hoists.

Check-in, check-out system.

Respirable atmosphere for hoist operators underground.

Circuit overload protection.

Controls and switches.

Trailing cable overload protection.

Electrical conductors.

Protection of power conductors from mobile equipment.

Distribution boxes.

Junction box connection procedures.

Insulation and fittings for power wires and cables.

Isolation or insulation of communication conductors.

High-potential electrical conductors.

Bare signal wires.

Splices and repairs of power cables.

Handling energized power cables.

Work on electrically-powered equipment.

Work on power circuits.

Identification of power switches.

Access to stationary electrical equipment or switchgear.

Protection of persons at switchgear.

Danger signs.

Authorized persons at major electrical installations.

Guarding electrical connections and resistor grids.

Grounding circuit enclosures.

Grounding transformer and switchgear enclosures.

Grounding mobile equipment.

Testing grounding systems.

Correction of dangerous conditions.

Inspection and cover plates.

Hand-held electric tools.

Guarding around lights.

Weatherproof lamp sockets.

Fuse removal or replacement.

Fuses in high-potential circuits.

Attachment of trailing cables.

Protection of surplus trailing cables.

Installation of operating controls.

Design of switches and starting boxes.

Track bonding.

Overhead powerlines.

Guy wires.

Communication conductors on power poles.

Installation of trolley wires.

Circuits powered from trolley wires.

Short circuit and lightning protection.

Guarding trolley wires and bare powerlines.

Installation of transformers.

Locking transformer enclosures.

Lightning protection for telephone wires and ungrounded conductors.

Movement or operation of equipment near high-voltage powerlines.

Bare conductor guards.

Bonding metal pipelines to ground return circuits.

Isolation of powerlines.

Support of power cables in shafts and boreholes.

Branch circuit disconnecting devices.

Transformer stations.

Location of trolley wire.

Splicing trailing cables.

General requirements for boilers and pressure vessels.

Reciprocating-type air compressors.

Air receiver tanks.

Compressor air intakes.

Inspection of compressed-air receivers and other unfired pressure vessels.

Compressor discharge pipes.

Pressure system repairs.

Use of compressed air.

High-pressure hose connections.

Boilers.

Definitions.

Safety defects; examination, correction and records.

Brakes.

Brakes for rail equipment.

Operators' stations.

Tire repairs.

Procedures during repairs or maintenance.

Falling object protection.

Moving machine parts.

Overhead drive belts.

Unguarded conveyors with adjacent travelways.

Flying or falling materials.

Slusher, backlash guards and securing.

Construction and maintenance of guards.

Inclined conveyors: backstops or brakes.

Air valves for pneumatic equipment.

Stationary grinding machines.

Hand-held power tools.

Roll-over protective structures (ROPS) and seat belts for surface equipment.

Seat belts for surface haulage trucks.

Horns and backup alarms for surface equipment.

Mantrip trolley wire hazards underground.

Makeshift couplings.

Trip lights.

Warnings prior to starting or moving equipment.

Conveyor start-up warnings.

Manual cleaning of conveyor pulleys.

Application of belt dressing.

Machinery lubrication.

Machinery, equipment, and tools.

Securing movable parts.

Parking procedures for unattended equipment.

Warning devices.

Safety procedures for towing.

Movement of dippers, buckets, loading booms, or suspended loads.

Blocking equipment in a raised position.

Chains, ropes, and drive belts.

Ventilation and shielding for welding.

Train warnings.

Coupling or uncoupling cars.

Backpoling.

Securing parked railcars.

Movement of equipment on adjacent tracks.

Brakeman signals.

First aid materials.

Hard hats.

Protective footwear.

Eye protection.

Safety belts and lines.

Protective equipment and clothing for hazards and irritants.

Protective equipment or clothing for welding, cutting, or working with molten metal.

Eye protection when operating grinding wheels.

Life jackets and belts.

Provision and maintenance of self-rescue devices.

Location of self-rescue devices.

Stacking and storage of materials.

Bins, hoppers, silos, tanks, and surge piles.

Storage of hazardous materials.

Containers for hazardous materials.

Securing gas cylinders.

Protection of gas cylinder valves.

Taglines, hitches, and slings.

Suspended loads.

Dropping materials from overhead.

Riding hoisted loads or on the hoist hook.

Storage of incompatible substances.

Working with molten metal.

Operator-carrying overhead cranes.

Work or travel on overhead crane bridges.

Lift trucks.

Hoisting heavy equipment or material.

Illumination of surface working areas.

Electric lamps.

Examination of working places.

New employees.

Designation of person in charge.

First aid.

Emergency telephone numbers.

Emergency communications system.

Emergency medical assistance and transportation.

Working alone.

Working alone.

Mine emergency and self-rescuer training.

Application.

Rated capacities.

Anchoring.

Driving mechanism connections.

Brakes.

Locking mechanism for clutch.

Automatic hoist braking devices.

Overtravel and overspeed devices.

Friction hoist synchronizing mechanisms.

Position indicator.

Location of hoist controls.

Drum flanges.

Grooved drums.

Diesel- and other fuel-injection-powered hoists.

Friction hoist overtravel protection.

Emergency braking for electric hoists.

Overtravel by-pass switches.

Guide ropes.

Minimum rope strength.

Initial measurement.

Examinations.

Retirement criteria.

Load end attachments.

Drum end attachment.

End attachment retermination.

End attachment replacement.

Safety device attachments.

Headframe design.

Headframe height.

Fleet angles.

Platforms around elevated head sheaves.

Metal bonnets.

Hoisting persons in buckets.

Bucket requirements.

Rope guides.

Availability of hoist operator for manual hoists.

Availability of hoist operator for automatic hoists.

Hoist operator's physical fitness.

Experienced hoist operators.

Maximum hoisting speeds.

Maximum acceleration and deceleration.

Persons allowed in hoist room.

Lowering conveyances by the brakes.

Maximum riders in a conveyance.

Trips during shift changes.

Orderly conduct in conveyances.

Entering and leaving conveyances.

Closing cage doors or gates.

Riding in skips or buckets.

Skips and cages in same compartment.

Hoisting during shift changes.

Riding the bail, rim, bonnet, or crosshead.

Use of open hooks.

Maximum speeds for hoisting persons in buckets.

Lowering buckets.

Hoisting buckets from the shaft bottom.

Blocking mine cars.

Hoisting tools, timbers, and other materials.

Conveyances not in use.

Overtravel backout device.

Dual signaling systems.

Signaling instructions to hoist operator.

Signaling from conveyances.

Standard signal code.

Posting signal code.

Location of signal devices.

Familiarity with signal code.

Shaft landing gates.

Stopblocks and derail switches.

Shaft guides.

Dumping facilities and loading pockets.

Clearance at shaft stations.

Landings with more than one shaft entrance.

Shaft sets.

Precautions for work in compartment affected by hoisting operation.

Posting warning signs during shaft work.

Shaft inspection and repair.

Overhead protection for shaft deepening work.

Shaft-sinking ladders.

Procedures for inspection, testing, and maintenance.

Recordkeeping.

Replacement parts.

Examinations and tests at beginning of shift.

Conveyance shaft test.

Hoist conveyance connections.

Safety catches.

Shaft.

Sheaves.

Rollers in inclined shafts.

Intoxicating beverages and narcotics.

Potable water.

Housekeeping.

Carbon tetrachloride.

Toilet facilities.

Tests for explosive dusts.

Retaining dams.

Barricades and warning signs.

Waste receptacles.

Prohibited areas for food and beverages.

Unattended mine openings.

Abandoned mine openings.

Blasting underground in hazardous areas.

Two-way communication equipment for underground operations.

Scope.

Definitions.

Mine category or subcategory.

Category placement or change in placement.

Notice and appeal of placement or change in placement.

Smoking (I-A, II-A, III, and V-A mines).

Smoking (I-C mines).

Open flames (I-A, II-A, III, and V-A mines).

Open flames (I-C mines).

Smoking and open flames (IV mines).

Dust containing volatile matter (I-C mines).

Mechanical ventilation (I-A, I-B, I-C, II-A, II-B, III, IV, V-A, and V-B mines).

Main Fans (I-a, I-b, I-c, Ii-a, Iii, V-a, and V-b Mines).

Main fan operation (I-C mines).

Main fan operation and inspection (I-A, II-A, III, and V-A mines).

Doors on main fans (I-A, II-A, III, and V-A mines).

Main ventilation failure (I-A, II-A, III, and V-A mines).

Booster fans (I-A, II-A, III, and V-A mines).

Auxiliary fans (I-A, II-A, III, and V-A mines).

Auxiliary fans (I-C mines).

In-line filters (I-C mines).

Air flow (I-A mines).

Air flow (I-C, II-A, and V-A mines).

Air flow (III mines).

Changes in ventilation (I-A, II-A, III, and V-A mines).

Separation of intake and return air (I-A, II-A, III, and V-A mines).

Separation of intake and return air (I-C mines).

Seals and stoppings (I-A, I-B, and I-C mines).

Seals and stoppings (III, V-A, and V-B mines).

Seals and stoppings (II-A mines).

Air passing unsealed areas (I-A, II-A, III, and V-A mines).

Overcast and undercast construction (I-A, II-A, III, and V-A mines).

Ventilation materials (I-A, I-B, I-C, II-A, III, V-A, and V-B mines).

Crosscuts before abandonment (III mines).

Auxiliary equipment stations (I-A and III mines).

Auxiliary equipment stations (I-C mines).

Testing for methane (IV mines).

Approved testing devices (I-A, I-B, I-C, II-A, II-B, III, IV, V-A, and V-B mines).

Preshift examination (I-A, I-C, II-A, III, and V-A mines).

Weekly testing (I-A, III, and V-A mines).

Weekly testing (II-A mines).

Actions at 0.25 percent methane (I-B, II-B, V-B, and VI mines).

Actions at 0.5 percent methane (I-B, II-A, II-B, IV, V-B, and VI mines).

Actions at 0.5 percent methane (I-C mines).

Actions at 1.0 percent methane (I-A, I-B, III, V-A, and V-B mines).

Actions at 1.0 percent methane (I-C, II-A, II-B, and IV mines).

Actions at 1.0 percent methane (VI mines).

Actions at 2.0 to 2.5 percent methane in bleeder systems (I-A and III mines).

Actions at 2.0 percent methane (I-B, II-B, V-B, and VI mines).

Actions at 2.0 percent methane (IV mines).

Actions at 2.0 percent methane (V-A mines).

Advance face boreholes (I-C mines).

Atmospheric monitoring systems (I-A, II-A, and V-A mines).

Approved equipment (I-A and V-A mines).

Approved equipment (I-C mines).

Approved equipment (II-A mines).

Approved equipment (III mines).

Methane monitors (I-A mines).

Methane monitors (II-A mines).

Methane monitors (III mines).

Methane monitors (V-A mines).

Electrical cables (I-C mines).

Electrical cables (II-A mines).

Distribution boxes (II-A and V-A mines).

Explosion-protection systems (I-C mines).

Flow-control devices (V-A and V-B mines).

Self-contained breathing apparatus (V-A mines).

Underground retorts (I-A and I-B mines).

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

Blasting from the surface (I-A mines).

Blasting from the surface (I-C mines).

Blasting from the surface (II-A mines).

Blasting from the surface (II-B mines).

Blasting from the surface (V-A mines).

Explosive materials and blasting units (III mines).

Blasting on shift (III mines).

Secondary blasting (I-A, II-A, and V-A mines).

Purpose and scope.

Definitions.

Written safety program.

Requirements for written safety program.

Record and inspection.