Effective - 28 Aug 1967, 2 histories
293.590. Hoisting equipment and operating regulations. — 1. A qualified hoisting engineer shall be on duty continuously when men are underground at noncoal mines where men are transported by hoists. Hoists used for handling men shall be equipped with overspeed, overtravel and automatic stop controls and shall be equipped with brakes capable of stopping and holding the fully loaded unbalanced cage or trip at any point in the shaft or slope. An accurate and reliable indicator, showing the position of the cage or trip, shall be so placed as to be in clear view of the engineer, unless the position of the cage or trip is clearly visible to the engineer at all times.
2. Hoisting ropes on all cages or trips shall be adequate in size to handle the load and have a proper factor of safety as defined in the America Standard Association's Wire Rope Standards and shall be replaced when it shows more than six broken wires in any single pitch length or lay of rope. On conventional drum type hoists only, as distinguished from friction type hoists, the rope shall have at least three full turns on the drum when it is extended to its maximum working length and shall make at least one full turn on the drum shaft or around the spoke of the drum, in case of a free drum, and be fastened securely by means of clamps. A hoisting rope shall be fastened to its load by a zinc-filled socket or by a thimble and clamps. No spliced hoisting rope or cable shall be used.
3. Hoisting equipment shall be inspected daily by a trained inspector and a record made of such inspection. The record book shall be made open for the information of all employees at the mine.
4. Cages or similar devices used for hoisting men shall be of substantial construction with adequate steel bonnets, with enclosed sides, with gates across the ends of the cage when men are being hoisted or lowered, and with sufficient handholds or chains for all men on the cage to maintain their balance. Cage floors shall be constructed so that they will be adequate to support the load, and where only one cable is used such cage shall be furnished with spring catches or such other or different safety device approved by the director, intended and provided, as far as possible, to prevent the consequences of cable breaking or the loosening or disconnecting of the machinery.
5. The director or a mine inspector shall determine the number of men that may be lowered or hoisted at any one time and a notice of the number shall be posted by him in a conspicuous place at the top and bottom of the shaft and at all other landings. In no case shall the total weight of the cage and men, estimated at one hundred sixty pounds per man, exceed one-fifth of the minimum breaking strength of the brakes, ropes, links, and other connections bearing the cage.
6. No person other than an attendant shall be lowered or hoisted in or on any cage or trip or other hoisting apparatus carrying explosives, steel, equipment or material. All small hand tools, lunch containers and small parts shall be adequately secured to the approval of the director.
7. The director of the division of mine inspection shall determine the safe speed of the cage in a shaft or slope where men are being lowered into or hoisted out of a mine when a speed in excess of five hundred feet per minute is requested by the operator. The mine inspector shall make a thorough inspection of the equipment to be used and cause two test runs at full load to be made before any person is permitted to ride on the cage at the increased speed. When major repairs are made or new or used equipment is installed, the same test shall be made by the operator and a record of such test shall be recorded in a book kept for that purpose and such record book shall be made open for the information of all employees at the mine. In no event shall the speed of the cage where men are lowered or hoisted be in excess of one thousand five hundred feet per minute. The mine inspector shall post a notice at the top and bottom landings of the shaft and at all other landings of the safe speed of the cage on which men are permitted to ride.
8. An adequate signaling code shall be adopted, subject to the approval of a mine inspector, in every mine hoisting or lowering men underground.
9. The owner, agent or operator of all mines employing twenty-five or more men, at the beginning and end of a shift, shall cause a competent person to be stationed at the top of the shaft, and a competent person to be stationed at the bottom of the shaft, whose duties shall be to answer all signals for the lowering or hoisting of men in the shaft, and to keep watch over, and control of, such signals while men are being lowered or hoisted in the shaft.
10. The provisions of this section shall not apply to mines employing fewer than sixteen men underground.
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(L. 1959 S.B. 188 § 63, A.L. 1967 p. 407)
Structure Missouri Revised Statutes
Title XVIII - Labor and Industrial Relations
Chapter 293 - Mining Regulations
Section 293.010 - Definitions.
Section 293.020 - Applicability of law.
Section 293.040 - Maps of mine, when made, contents.
Section 293.050 - Hours of work — safety rules — posting of law and rules.
Section 293.070 - Limits on visitors.
Section 293.080 - Mine owner to report, when.
Section 293.090 - Director's report, contents.
Section 293.100 - Washrooms, dressing rooms, first aid equipment.
Section 293.110 - Working places, shafts — drinking devices.
Section 293.120 - Air safety requirements.
Section 293.130 - Mine railroad equipment and operating requirements — gasoline engines limited.
Section 293.140 - Escapement shafts, how equipped.
Section 293.150 - Electrical wiring and equipment requirements.
Section 293.160 - Electrical equipment requirements.
Section 293.170 - Fire safety requirements.
Section 293.180 - Protective clothing and devices to be worn.
Section 293.190 - Accident reports, investigation, powers of inspector — failure to report, penalty.
Section 293.200 - Shaft coal mine outlets and escapement shaft requirements — penalty.
Section 293.210 - Shaft coal mines, ventilation requirements.
Section 293.220 - Daily examination of coal mines generating explosive gas, record.
Section 293.230 - Experienced coal miner to handle explosives or gases.
Section 293.240 - Blasting cartridge requirements.
Section 293.250 - Violation of coal mining safety laws, penalty.
Section 293.260 - Explosive strongbox required — employment of shot firers, duties — penalty.
Section 293.270 - Storage of over daily supply of explosives in mine prohibited.
Section 293.280 - Location of explosive storage magazines, ventilation.
Section 293.290 - Detonators or caps not kept in magazine in coal mine.
Section 293.300 - Explosives not to be prepared in storage magazine.
Section 293.310 - Violations of law as to explosive storage, penalty.
Section 293.320 - Bore holes required, when, where.
Section 293.330 - Signaling and hoisting devices in shaft, safety requirements.
Section 293.350 - Hoisting equipment, operating requirements (coal mines).
Section 293.360 - Inspection of hoisting equipment, records — penalty (coal mines).
Section 293.380 - Coal mine operated, how — abandoned workrooms sealed, penalty.
Section 293.390 - Standards for roof control — supply of materials required (coal mines).
Section 293.400 - Coal dust controls.
Section 293.410 - Welding and cutting operations, ventilation, rock-dusting.
Section 293.420 - Weighing regulations where coal miners paid by weight.
Section 293.440 - Weighing laws apply to "loaders", when.
Section 293.450 - Coal miners to be brought to surface for lunch period of hour, penalty.
Section 293.460 - Coal miner to prove qualifications before working alone — penalty.
Section 293.470 - Division to close coal mine, when — penalty.
Section 293.480 - Coal miners paid wages, when — penalty.
Section 293.490 - Coal miner's lien for wages.
Section 293.500 - Applicability of sections 293.200 to 293.490.
Section 293.510 - Dangerous mines to be closed by state, expenses.
Section 293.520 - Experience required for miners, except trainees.
Section 293.530 - Notice of opening and abandonment of mines — abandoned mines to be sealed.
Section 293.540 - Outlets may be required, when — location of shafts.
Section 293.550 - Ventilation of mines.
Section 293.560 - State inspections for health safety — procedure when ventilation inadequate.
Section 293.570 - State inspection for dust — waterlines to be installed, when, sprinkling.
Section 293.580 - Explosives, storage, handling and use.
Section 293.590 - Hoisting equipment and operating regulations.
Section 293.600 - Director may require crossheads in shaft sinking operations.
Section 293.610 - Applicability of sections 293.510 to 293.600.
Section 293.620 - Caves, inspection, to provide map — inspection fees.
Section 293.630 - Rules and regulations.
Section 293.640 - Inspectors and employees — appointment, salaries.
Section 293.650 - Expenses of director and inspectors.
Section 293.660 - Inspection of mines, when — rights and duties of inspectors — reports.
Section 293.670 - Complaints as to dangerous conditions, procedure.
Section 293.680 - Judicial review of orders of director — effect of filing on order, procedure.