57.6101 Areas around explosive material storage facilities. Damaged or deteriorated explosive material shall be disposed of in a safe manner in accordance with the instructions of the manufacturer. Persons shall stay clear of suspended loads. 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). 57.19008 Friction hoist synchronizing mechanisms. Any substance classified as an explosive by the Department of Transportation in 49 CFR 173.53, 173.88, and 173.100. 57.19006 Automatic hoist braking devices. The individual shall be currently trained and have the skills to perform patient assessment and artificial respiration; control bleeding; and treat shock, wounds, burns, and musculoskeletal injuries. Warning devices shall be located so that they can be seen and heard by a person designated by the mine operator; and, (2) Automatically deenergize power in affected areas, except power to monitoring equipment determined by MSHA to be intrinsically safe under 30 CFR part 18, when methane at any sensor reaches, (i) 1.0 percent in a Subcategory I-A or V-A mine; or. Inclined shafts or adits shall be considered secure when locked at the surface. Stockpile and muckpile faces shall be trimmed to prevent hazards to persons. High potential means more than 650 volts. The equipment must also be blocked or secured to prevent rolling. (3) Evacuation. (e) This standard is not applicable to rail beds. Misfire. (a) More than one broken wire at an attachment; (b) Improper installation of an attachment; (d) Evidence of deterioration from corrosion at an attachment. (d) Each mine and mill shall be required to operate in accordance with the safety standards applicable to its particular category or subcategory. Two-way communication equipment for underground operations. (c) This standard does not apply to air tuggers of 10 horsepower or less that have only one cable and one drum. 57.16017 Hoisting heavy equipment or material. The valve shall be closed except when the equipment is being operated. (f) Holes shall not be reloaded for at least 12 hours when the blastholes have failed to break as planned. (a) Open flames, including cutting and welding, shall not be used underground. 57.19078 Hoisting buckets from the shaft bottom. Certification of inspections shall be made by signature and date. (e) The number and type of internal combustion engine units used underground, including make and model of unit, type of engine, make and model of engine, brake horsepower rating of engine, and approval number. Vents shall be installed so that forces are directed away from persons should an explosion occur. Underground trailing cables shall be accepted or approved by MSHA as flame resistant. Major electrical installation means an assemblage of stationary electrical equipment for the generation, transmission, distribution, or conversion of electrical power. (3) Located in areas free of combustible materials or in areas where any exposed combustible materials are coated with one inch of shotcrete, one-half inch of gunite, or other noncombustible material with equivalent fire protection characteristics. 57.22226 Testing for methane (IV mines). The written examination is 30 questions pertaining to State laws/regulations and arc flash. (2) So that a fire or explosion in the storage facilities will not prevent escape from the mine, or cause detonation of the contents of another storage facility; (3) Out of the line of blasts, and protected from vehicular traffic, except that accessing the facility; (4) At least 200 feet from work places or shafts; (5) At least 50 feet from electric substations; (6) A safe distance from trolley wires; and. Noncombustible material means a material that, in the form in which it is used and under the conditions anticipated, will not ignite, burn, support combustion, or release flammable vapors when subjected to fire or heat. While the request for category or subcategory reassignment is pending, the mine shall continue to operate under the standards for the category or subcategory to which originally assigned. Persons shall not be on a mast while the drill-bit is in operation unless they are provided with a safe platform from which to work and they are required to use safety belts to avoid falling. If you would like to comment on the current content, please use the 'Content Feedback' button below for instructions on contacting the issuing agency. If the second fixture also turns, corrective action shall be taken. When such energized cables are moved manually, insulated hooks, tongs, ropes, or slings shall be used unless suitable protection for persons is provided by other means. 57.6501 Nonelectric initiation systems. L. 91173 as amended by Pub. 57.14211 Blocking equipment in a raised position. The operator shall institute a reasonable program to assure that persons entering the mine do not carry such items. 53 FR 32528, Aug. 25, 1988, unless otherwise noted. Availability of hoist operator for automatic hoists. The eCFR is displayed with paragraphs split and indented to follow (b) Covered with fire-retardant material, if constructed of wood; (d) Self-closing, if manually operated; and. Auxilary fan means a fan used to deliver air to a working place off the main airstream; generally used with ventilation tubing. Construction and maintenance of ventilation doors. 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. The combustion chamber of a jet drill stem which has been sitting unoperated in a drill hole shall be flushed with a suitable solvent after the stem is pulled up. (2) Hooks with self-closing latches or their equivalent must be used. Internal combustion engines shall be switched off before refueling if the fuel tanks are integral parts of the equipment. Towers shall be suitably protected from swaying buckets. (b) Persons shall not work on top of, under, or work from a raised component of mobile equipment until the component has been blocked or mechanically secured to prevent accidental lowering. Compressed and liquid gas cylinders shall be secured in a safe manner. You are using an unsupported browser. Safety Practices and Operational Procedures.