Whenever respiratory protective equipment is used a program for selection, maintenance, training, fitting, supervision, cleaning, and use shall meet the following minimum requirements: (a) Respirators approved by NIOSH under 42 CFR part 84 which are applicable and suitable for the purpose intended shall be furnished and miners shall use the protective equipment in accordance with training and instruction. Crossovers, elevated walkways, elevated ramps, and stairways shall be of substantial construction, provided with handrails, and maintained in good condition. 57.19110 Overhead protection for shaft deepening work. For rope lengths 4,000 feet or greater: Minimum Value = Static Load 5.0. In granting or withholding approval, the district manager shall consider the potential hazards created by. 57.11012 Protection for openings around travelways. Class IIIA liquidsthose having flash points at or above 140 F (60 C) and below 200 F (93.4 C). Wooden components of ladders shall not be painted except with a transparent finish. (a) The Administrator's determination of category or subcategory placement or change in placement shall become final upon the 30th day after it is served on the mine operator and representative of miners, unless a request for a hearing has been filed. If extraneous electricity is suspected in an area where electric detonators are used, loading shall be suspended until tests determine that stray current does not exceed 0.05 amperes through a 1-ohm resister when measured at the location of the electric detonators. 57.19014 Friction hoist overtravel protection. The signal device shall be located so that it can be seen or heard by a person designated by the mine operator. Areas containing major electrical installations shall be entered only by authorized persons. Emulsion means an explosive material containing substantial amounts of oxidizers dissolved in water droplets, surrounded by an immiscible fuel. Such locks or preventive devices shall be removed only by the persons who installed them or by authorized personnel. Tests for methane shall be made at electric auxiliary fans before they are started. The drilling area shall be inspected for hazards before starting the drilling operations. This standard does not apply to diesel-powered equipment. MSHA electrical qualification card. Category placement or change in placement. Magazine. (a) All seals, and those stoppings that separate main intake from main return airways, shall be of substantial construction, except that stoppings constructed of brattice materials may be used in face areas.
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