(c) When nonelectric initiation systems use gas tube, continuity of the circuit shall be tested prior to blasting. (1) Definitions. Any hoist used to hoist persons shall be equipped with a brake or brakes which shall be capable of holding its fully loaded cage, skip, or bucket at any point in the shaft. Main fans (I-A, I-B, I-C, II-A, III, V-A, and V-B mines). No person shall enter the facility until the supply and discharge of materials have ceased and the supply and discharge equipment is locked out. (b) When the entire length of the conveyor is not visible from the starting switch, a system which provides visible or audible warning shall be installed and operated to warn persons that the conveyor will be started. Operating controls shall be installed so that they can be operated without danger of contact with energized conductors. (a) When persons are exposed to slushing operations, the slushers shall be equipped with rollers and drum covers and anchored securely before slushing operations are started to protect against hazardous movement before slushing operations are started. Mine operators seeking further information regarding the construction and installation of falling object protective structures (FOPS) may consult the following national consensus standards, as applicable. 57.19107 Precautions for work in compartment affected by hoisting operation. 57.14105 Procedures during repairs or maintenance. (C) A second fan capable of accomplishing ventilation reversal shall be available for use in the event of failure of the main fan; (iii) Provide rapid air reversal that allows persons underground time to exit in fresh air by the second escapeway or find a place of refuge; and. Dust containing volatile matter shall not be allowed to accumulate on the surfaces of enclosures, facilities, or equipment used in surface milling in amounts that, if suspended in air, would become an explosive mixture. (1) Installed on the surface in noncombustible housings provided with noncombustible air ducts; (2) Except in Subcategory I-A mines, provided with an automatic signal device to give an alarm when the fan stops. Power cables energized to potentials in excess of 150 volts, phase-to-ground, shall not be moved with equipment unless sleds or slings, insulated from such equipment, are used. Such definition is further to be narrowly interpreted, since, as an excuse, it represents an exception to one of the most basic obligations in the sporting system, i.e. These crossings shall also be planked or filled between the rails. 57.19129 Examinations and tests at beginning of shift. Walkways with outboard railings shall be provided wherever persons are required to walk alongside elevated conveyor belts. (1) Crawler tractors and crawler loaders; (4) The tractor portion of semi-mounted scrapers, dumpers, water wagons, bottom-dump wagons, rear-dump wagons, and towed fifth wheel attachments; (b) ROPS construction. (b) Persons attempting to free chute hangups shall be experienced and familiar with the task, know the hazards involved, and use the proper tools to free material. (a) Control doors or bulkheads. Certification of calibration tests shall be made by signature and date. 57.19008 Friction hoist synchronizing mechanisms. [53 FR 32528, Aug. 25, 1988, as amended at 67 FR 38385, June 4, 2002; 68 FR 19347, Apr. Breakthrough holes shall be stemmed at both ends. Operating speeds and control of equipment. 57.19072 Skips and cages in same compartment. Detonating cord. (d) Each mine and mill shall be required to operate in accordance with the safety standards applicable to its particular category or subcategory. Detonators may be either Class A detonators or Class C detonators, as classified by the Department of Transportation in 49 CFR 173.53 and 173.100, which is available at any MSHA Metal and Nonmetal Safety and Health district office. 57.22313 Explosion-protection systems (I-C mines). (c) This standard does not apply to air tuggers of 10 horsepower or less that have only one cable and one drum. (c) Sensing units of monitors shall be positioned at a location which provides for the most effective measurement of methane. Telephone or other voice communication shall be provided between the surface and refuge chambers and such systems shall be independent of the mine power supply. When ventilation control doors are opened as a part of the normal mining cycle, they shall be closed as soon as possible to re-establish normal ventilation to working places. Equipment shall not be operated in atmospheres containing 1.0 percent or more methane. Procedures for inspection, testing, and maintenance. (b) Mobile equipment, other than forklifts, carrying loads that project beyond the sides or more than four feet beyond the rear of the equipment shall have a warning flag at the end of the projection. (a) Positions which hinder their access to the control levers; (b) Insecure footing or insecure staging; or. At 53 FR 9615, Mar. Igniter cord means a fuse, cordlike in appearance, which burns progressively along its length with an external flame at the zone of burning, and is used for lighting a series of safety fuses in the desired sequence. Detonators shall not be transported on the same vehicle or conveyance with other explosives except as follows: (a) Detonators in quantities of more than 1,000 may be transported in a vehicle or conveyance with explosives or blasting agents provided the detonators are, (1) Maintained in the original packaging as shipped from the manufacturer; and. [61 FR 36801, July 12, 1996, as amended at 85 FR 2027, Jan. 14, 2020]. Weekly testing (I-A, III, and V-A mines). 57.9314 Trimming stockpile and muckpile faces. This record shall be retained until the rope is retired from service. Water gel. Diesel- and other fuel-injection-powered hoists. Heat sources capable of producing combustion shall be separated from combustible materials if a fire hazard could be created. An Overview of MSHA Regulations | 360training 57.14113 Inclined conveyors: backstops or brakes. If you have questions or comments regarding a published document please 57.13010 Reciprocating-type air compressors. (b) Boreholes shall be drilled in such a manner to insure that the advancing face will not accidently break into an abandoned mine or abandoned working. In underground mines utilizing a block-caving system or similar system, at least 6 feet (1.8 meters) of solid rib or pillar, including concrete reinforcement of at least 10 inches (254 millimeters), with overall dimensions of not less than 6 feet (1.8 meters) may be substituted for the 50-foot (15.2-meter) distance requirement. Backstops or brakes shall be installed on drive units of inclined conveyors to prevent the conveyors from running in reverse, creating a hazard to persons. 57.14111 Slusher, backlash guards and securing. (3) Loads in shaft or slope development when persons work below suspended loads. Regulations | Mine Safety and Health Administration (MSHA) 57.22215 Separation of intake and return air (I-A, II-A, III, and V-A mines). (b) Atmospheric monitoring systems shall, (1) Give warnings on the surface and underground when methane at any sensor reaches 0.5 percent or more, and when power to a sensor is interrupted. (3) The make and model number of the equipment for which the ROPS is designed. (3) All information upon which the Administrator's determination was based. Category II is divided into Subcategories II-A and II-B as follows: (i) Subcategory II-A applies to domal salt mines where an outburst reportable under 57.22004(c)(1) has occurred. Copies of these publications may be examined at any Metal and Nonmetal Mine Safety and Health District Office; at MSHA's Office of Standards, Regulations, and Variances, 201 12th Street South, Arlington, VA 222025452; 2026939440; or at the National Archives and Records Administration (NARA). (2) The mine operator must certify on the application that the operator has posted one copy of the application at the mine site for at least 30 days prior to the date of application, and has provided another copy to the authorized representative of miners. 57.9302 Protection against moving or runaway railroad equipment. Seat belts required under this section shall meet the requirement of SAE J386, Operator Restraint System for Off-Road Work Machines (1985, 1993, or 1997), or SAE J1194, Roll-Over Protective Structures (ROPS) for Wheeled Agricultural Tractors (1983, 1989, 1994, or 1999), as applicable, which are incorporated by reference. (c) At permanent storage areas for combustible liquids, means shall be provided for confinement or removal of the contents of the largest storage tank in the event of tank rupture. Flammable and Combustible Liquids and Gases. 57.19013 Diesel- and other fuel-injection-powered hoists. ( 2) Platform occupants must: ( i) Keep all parts of the body inside the platform during raising, lowering, and horizontal movement. Explosive. (c) The plan shall be updated as conditions warrant. 57.6309 Fuel oil requirements for ANFO. 57.6100 Separation of stored explosive material. (c) Bulk blasting agents shall be stored in weather-resistant bins or tanks which are locked, attended, or otherwise inaccessible to unauthorized entry. Inspection of compressed-air receivers and other unfired pressure vessels. [70 FR 32966, June 6, 2005; 70 FR 37901, June 30, 2005; 71 FR 29012, May 18, 2006]. (a) Power drills, disc sanders, grinders and circular and chain saws, when used in the hand-held mode shall be operated with controls which require constant hand or finger pressure. (a) Only persons trained and experienced in the handling and use of explosive material shall direct blasting operations and related activities. Competent person means a person having abilities and experience that fully qualify him to perform the duty to which he is assigned. (a) Compressed-air receivers and other unfired pressure vessels shall be inspected by inspectors holding a valid National Board Commission and in accordance with the applicable chapters of the National Board Inspection Code, a Manual for Boiler and Pressure Vessel Inspectors, 1979. Society of Automotive Engineers (SAE) minimum performance criteria for falling object protective structures (FOPS) SAE J231January, 1981. (a) Any diesel engine introduced into an underground area of a mine covered by this part after July 5, 2001, other than an engine in an ambulance or fire fighting equipment which is utilized in accordance with mine fire fighting and evacuation plans, must either: (1) Have affixed a plate evidencing approval of the engine pursuant to subpart E of Part 7 of this title or pursuant to Part 36 of this title; or. Berm means a pile or mound of material along an elevated roadway capable of moderating or limiting the force of a vehicle in order to impede the vehicle's passage over the bank of the roadway. An R-series filter shall not be used for longer than one work shift. (d) The operator shall maintain the examination records for at least one year, make the records available for inspection by authorized representatives of the Secretary and the representatives of miners, and provide these representatives a copy on request. (c) The safety catches shall be inspected by a competent person at the beginning of any 24-hour period that the conveyance is to be used. (a) Provided with a pressure-recording system; and. Oil recovery drill holes that penetrate oil bearing formations shall have devices to control the release of liquid hydrocarbons and hazardous gases during the drilling process. (c) Multiple-shot blasts shall be initiated with detonators encased in copper-based alloy shells. 57.22105 Smoking and open flames (IV mines). These mines are also required to be operated in accordance with the other applicable health and safety standards published in 30 CFR part 57. (a) Operators of mines which have experienced a rock burst shall. Shaft inspection and repair work in vertical shafts shall be performed from substantial platforms equipped with bonnets or equivalent overhead protection. (2) At least once every twelve months, maintenance checks shall be made of mechanical parts, the amount and condition of extinguishing agent and expellant, and the condition of the hose, nozzle, and vessel to determine that the fire extinguishers will operate effectively. (1) Securely by clips after making one full turn around the drum spoke; (2) Securely by clips after making one full turn around the shaft, if the drum is fixed to the shaft; or. Any opening or entrance from the surface into an underground mine. Persons other than examiners shall not reenter a Subcategory II-A mine until the methane level is less than 0.5 percent. All persons shall wear suitable protective footwear when in or around an area of a mine or plant where a hazard exists which could cause an injury to the feet. (a) Storage tanks for flammable or combustible liquids shall be. Compressor air intakes shall be installed to ensure that only clean, uncontaminated air enters the compressors. Fixed ladder anchorage and toe clearance. Organization and Purpose 552(a) and 1 CFR part 51. Duration of miner's employment plus 6 months. (a) Vehicles containing explosive material shall be. 57.4462 Storage of combustible liquids underground. (a) Surface belt conveyors within confined areas where evacuation would be restricted in the event of a fire resulting from belt-slippage shall be equipped with a detection system capable of automatically stopping the drive pulley. (a) Mine operators shall establish emergency firefighting, evacuation, and rescue procedures for the surface portions of their operations. (2) Fan installations for underground ventilation. (b) Blasting machines shall be tested, repaired, and maintained in accordance with manufacturer's instructions. 57.22205 Doors on main fans (I-A, II-A, III, and V-A mines). 57.22219 Seals and stoppings (II-A mines). (b) When firing with safety fuse ignited individually using handheld lighters, the safety fuse shall be of lengths which provide at least the minimum burning time for a particular size round, as specified in the following table: Table E1Safety FuseMinimum Burning Time. A storage facility used to store blasting agents corresponds to a BATF Type 4 or 5 storage facility. All personnel hoists used by employees shall be constructed of materials and components which meet the specifications for materials, construction, safety devices, assembly, and structural integrity as stated in the American National Standard A10.4-1963, Safety Requirements for Workmen's Hoists. (4) Test results shall be evaluated as follows: (i) If the initial test run is valid and the stopping distance does not exceed the corresponding stopping distance listed in Table 1, the performance of the service brakes shall be considered acceptable. 57.16015 Work or travel on overhead crane bridges. (4) Total blasting circuit resistance prior to connection to the power source. Mine emergency and self-rescuer training. Exposure limits for airborne contaminants. 57.19076 Maximum speeds for hoisting persons in buckets. (2) Provided with an air lock when passage through the fan bulkhead is necessary. (1) If a mine requires additional time to come into compliance with the final DPM limit established in 57.5060 (b) due to technological or economic constraints, the operator of the mine may file an application with the District Manager for a special extension. Main fans shall be maintained according to either the manufacturer's recommendations or a written periodic schedule adopted by the operator which shall be available at the operation on request of the Secretary or his authorized representative. Limit on exposure to diesel particulate matter. (2) Category II applies to domal salt mines where the history of the mine or geological area indicates the occurrence of or the potential for an outburst. Suitable warning signs shall be posted by the individuals who are to do the work. 57.6404 Separation of blasting circuits from power source. 57.19067 Trips during shift changes. Non-electric delay blasting cap means a detonator with an integral delay element and capable of being initiated by miniaturized detonating cord. (3) Service brake tests shall be conducted under the direction of the mine operator in cooperation with and according to the instructions provided by the MSHA inspector as follows: (i) Equipment capable of traveling at least 10 miles per hour shall be tested with a typical load for that particular piece of equipment. This incorporation by reference has been approved by the Director of the Federal Register in accordance with 5 U.S.C. Surplus trailing cables to shovels, cranes and similar equipment shall be, (b) Stored on reels mounted on the equipment; or. If the deficiency is determined to constitute a hazard, the hoisting equipment shall be removed from service until the deficiency has been corrected. No welding or cutting shall be performed on a bulk delivery vehicle until the vehicle has been washed down and all explosive material has been removed. Suitable electrical bonding methods include welding, riveting, or the use of securely tightened bolts where individual metal portions are joined. (a) Manually-operated horns or other audible warning devices provided on self-propelled mobile equipment as a safety device shall be maintained in a functional condition. (1) Service brake tests shall be conducted on surface-operated equipment at underground mines when an MSHA inspector has reasonable cause to believe that the service brake system does not function as required, unless the mine operator removes the equipment from service for the appropriate repair; (2) The performance of the service brakes shall be evaluated according to Table M1. (2) Where uranium is not minedthe complete individual exposure of all mine personnel working in active working areas with radon daughter concentrations in excess of 0.3 WL shall be calculated and recorded. 57.14212 Chains, ropes, and drive belts. 57.19003 Driving mechanism connections. 57.16012 Storage of incompatible substances. 57.22312 Distribution boxes (II-A and V-A mines). In such an event, and during other emergencies, the hoist operator shall accept instructions to direct movement of the conveyances only from authorized persons. The instruction shall be given by MSHA personnel or by persons who are certified by the District Manager of the area in which the mine is located. An average airborne radon daughter concentration for a designated active working area shall be determined by averaging all sampling results for that working area during the time that persons are present. Suitable warning notices shall be posted at the power switch and signed by the individuals who are to do the work. However, storage of only Class IIIB liquids does not require containment or drainage to remote impoundment. Openings above, below, or near travelways through which persons or materials may fall shall be protected by railings, barriers, or covers. 66 FR 5907, Jan. 19, 2001, unless otherwise noted. (5) Where there is not an appropriate test site at the mine or the equipment is not capable of traveling at least 10 miles per hour, service brake tests will not be conducted. 57.19080 Hoisting tools, timbers, and other materials. 1926.753 - Hoisting and rigging. | Occupational Safety and Health Under conditions of limited visibility these loads shall have a warning light at the end of the projection. These records shall be kept on the surface in a place chosen to minimize the danger of destruction by fire or other hazards. (2) The Assistant Secretary shall promptly notify the Administrative Law Judge of a discretionary review or an appeal. A statement of reasons for the action taken shall be included in the final decision. Chapter I Mine Safety and Health Administration, Department of Labor; . If a device stops working properly during such operations, the operator must safely stop operations. (d) The mine operator must install, use, and maintain feasible engineering and administrative controls to reduce a miner's exposure to or below the applicable DPM PEL established in this section. More than 50 pounds of non-fire-retardant wood. (b) Explosive material shall be protected from impact, except for tamping and dropping during loading. These records shall include the individual's time in each active working area such as stopes, drift headings, travelways, haulageways, shops, stations, lunch rooms, magazines and any other place or location where persons work, travel or congregate, and the concentration of airborne radon daughters for each active working area. (a) Welding operations shall be shielded when performed at locations where arc flash could be hazardous to persons.
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