Missouri Code of State Regulations › Title 8 - DEPARTMENT OF LABOR AND INDUSTRIAL RELATIONS › Division 30 - Division of Labor Standards › Chapter 2 - Mining Rules › Section 8 CSR 30-2.020 - Standard Practices for Safety and Operation

Current through Register Vol. 49, No. 14, July 15, 2024
PURPOSE: This amendment updates terms, removes gender
				  specific references, and provides updates due to modern mining practices used
				  by inspection section Division of Labor Standards in the rules establishing
				  standards for safe practices in the mining industry.
(1) Practices and standards acceptable to the
				director for the safe control of surface mine walls, including the overall
				slope of the mine wall, shall be established and followed by the operator. Such
				standards shall be consistent with sound engineering, the nature of the ground
				and the mine seams, and the insuring of safe working conditions according to
				the degree of slope. Mining methods shall be selected which shall provide wall
				stability, including benching, if necessary, to obtain a safe overall
				slope.
(2) All loose and hazardous
				material shall be stripped for a safe distance from the edge of the
				highwall.
(3) The width and height
				of benches shall be governed by the type of equipment to be used and the
				operation to be performed.
(4) Safe
				means of scaling walls shall be provided. Loose material or trees on exposed
				wall areas shall be removed before any other work is performed in the exposed
				wall area.
(5) Miners shall not
				work under dangerous walls. Hazardous overhanging walls shall be taken down
				immediately and other unsafe ground conditions shall be corrected promptly, or
				the areas shall be barricaded or posted.
(6) When removing rock by hand, miners shall
				approach loose rock and areas on walls to be scaled from above and shall scale
				from a safe location.
(7) The
				supervisor or a competent person designated by the supervisor shall examine
				working areas and faces of walls for unsafe conditions at least at the
				beginning of each shift, during the shift while miners are working, and after
				blasting. Any unsafe conditions found shall be corrected before any further
				work is performed at the immediate area or face at which the unsafe condition
				exists.
(8) Miners shall examine
				their working places before starting work and frequently thereafter, and any
				unsafe conditions shall be reported immediately to the supervisor and
				documented before any other work is performed.
(9) Large boulders requiring secondary
				blasting shall be in a safe location before they are drilled or
				broken.
(10) Miners shall not be
				permitted to work between equipment and the mine wall, highwall, or bank where
				the equipment may hinder escape from falls or slides of the wall, unless
				special safety precautions are taken in advance.
(11) No person shall smoke or use an open
				flame where flammable or combustible liquids or greases are stored or in areas
				or places where fire or explosion hazards exist.
(12) Signs warning against smoking and open
				flames shall be posted so they can readily be seen in areas or places where
				fire or explosion hazards exist.
(13) Areas surrounding flammable-liquid
				storage tanks and electric substations and transformers shall be kept free from
				grass (dry), weeds, underbrush, and other combustible materials for at least
				twenty-five feet (25') in all directions.
(14) Fires used for warming purposes shall be
				enclosed to prevent persons from coming in contact with flame or coals which
				would ignite clothing. Oily or easily ignited clothing shall not be worn where
				ignition hazards are present.
(15)
				Buildings or rooms in which oil, grease, flammable liquids, or similar
				flammable materials are stored shall be of fire-resistant construction and well
				ventilated. Provisions shall be made to control spilled flammable
				liquids.
(16) Abandoned electrical
				circuits shall be de-energized and isolated so that they cannot become
				energized inadvertently. If no further use is intended, they shall be
				removed.
(17) Combustible
				materials, grease, lubricants, or flammable liquids shall not be allowed to
				accumulate where they can create a fire hazard.
(18) Materials, such as oily waste and rags,
				which are subject to spontaneous combustion shall be placed in tightly covered
				metal containers until disposed of properly.
(19) When flammable solvents are used for
				cleaning, such solvents shall be transported in safety cans of not over five-
				(5-) gallon capacity. When solvents are used to clean parts, the containers
				used shall have tight fitting covers. No cleaning may be done with flammable
				solvents near a possible source of ignition.
(20) Oxygen cylinders shall not be stored
				near oil or grease.
(21) Gauges and
				regulators used with oxygen or acetylene cylinders shall be kept clean and free
				of oil and grease.
(22) Valves on
				oxygen, acetylene, and other compressed gas cylinders shall be kept closed and
				protected from damage when they are not in use, stored, or
				transported.
(23) Battery-charging
				stations shall be located in well ventilated areas and in the clear of other
				equipment.
(24) Internal combustion
				engines, except diesels, shall be shut off and stopped before being
				fueled.
(25) Each mine shall have
				available or be provided with, appropriate types of firefighting equipment
				adequate for the size of the mine.
(26) Firefighting equipment shall be
				strategically located, readily accessible, plainly marked, properly maintained
				and inspected periodically, and records shall be kept of such
				inspections.
(27) Fire
				extinguishers shall be adequate in number and size and of the appropriate type
				for each particular fire hazard involved.
(28) Fire extinguishers shall be replaced
				immediately with fully charged extinguishers of the same capability after any
				discharge is made from the extinguishers.
(29) Fire extinguishers shall be visually
				inspected monthly, tested at least once each year, and maintained according to
				the manufacturer's recommendation. Each extinguisher shall bear a tag showing
				the date of inspection and testing and the initials or name of the person
				making the examination.
(30) Fire
				extinguishers shall be approved by Underwriters' Laboratories, Inc., or Factory
				Mutual Research Corporation.
(31)
				When welding or cutting near combustible materials, precautions shall be taken
				to ensure that smoldering metal or sparks do not result in fire.
(32) Belt conveyors in locations where fire
				would create a hazard to personnel shall be provided with safety switches to
				stop the drive pulley automatically in the event the belt stalls or there is
				excessive slippage.
(33) Detonators
				and other cap sensitive high explosives shall be stored in magazines provided
				for that purpose.
(34) Blasting
				agents may be stored in van type trailers, provided that they are well
				ventilated, kept clean, and free of extraneous material that could create a
				fire hazard.
(35) Blasting agents,
				safety fuse, or detonating cord may be stored with explosives, but blasting
				agents must be kept physically separated from the fuse, detonators, and
				explosives.
(36) Magazines shall be
				visibly marked and -
(A) Detached structures
				located away from power lines, fuel storage areas, and other possible sources
				of fire;
(B) Constructed
				substantially of noncombustible material or covered with fire-resistant
				material;
(C) Electrically bonded
				and grounded if constructed of metal;
(D) Made of non-sparking materials on the
				inside including floors;
(E)
				Provided with adequate and effectively screened ventilation openings near the
				floor and ceiling;
(F) Kept locked
				securely when unattended;
(G) Used
				exclusively for storage of blasting agents, explosives, or detonators and kept
				free of all extraneous materials;
(H) Kept clean and dry in the interior and in
				good repair; and
(I) Unheated,
				unless heated in a manner that does not create a fire or explosion hazard.
				Electrical heating devices shall not be used inside a magazine.