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 30-2.010 - Definitions

Current through Register Vol. 49, No. 14, July 15, 2024
PURPOSE: This rule defines those terms used by the
				  inspection section, Division of Labor Standards in the rules establishing
				  standards for safe practices in the mining industry.
(1) Active workings means any place in any
				mine where miners normally work or travel.
(2) ANFO means ammonium nitrate-fuel oil
				mixtures.
(3) Approved means tested
				and accepted for a specific purpose by a nationally recognized safety
				agency.
(4) Barricaded means
				obstructed to restrict the passage of persons, vehicles or flying
				materials.
(5) Berm means a pile or
				mound of material capable of restraining a vehicle; also a shelf, ledge or
				material placed to contain loose slope material.
(6) Blasting agent means a cap insensitive
				chemical composition or mixture consisting of fuel and oxidizer and no
				explosive ingredient but which can be made to detonate when initiated with a
				high strength explosive primer.
(7)
				Blasting area means the area near blasting operations in which concussion or
				flying material can reasonably be expected to cause injury.
(8) Blasting cap means a detonator containing
				a charge of detonating compound, which is ignited by electric current or the
				spark of a fuse; used for detonating explosives.
(9) Blasting circuit means electric circuits
				used to fire electric detonators or to ignite an igniter cord by means of an
				electric starter.
(10) Blasting
				switch means a switch used to connect a power source to a blasting
				circuit.
(11) Box-type magazine
				means a small, portable magazine used to store limited quantities of explosives
				or detonators for short periods of time in locations at the mine which are
				convenient to the blasting sites at which they will be used.
(12) Capped fuse means a length of safety
				fuse to which a detonator has been attached.
(13) Capped primer means a package or
				cartridge of explosives which is specifically designed to transmit detonation
				to other explosives and which contains a detonator.
(14) Combustible means capable of being
				ignited and consumed by fire.
(15)
				Director means director of the Division of Labor Standards.
(16) Company official means a member of the
				company supervisory or technical staff.
(17) Competent person means a person having
				abilities that fully qualify him/her to perform the duty to which s/he is
				assigned.
(18) Department means
				Department of Labor and Industrial Relations.
(19) Detonating cord or detonating fuse means
				a flexible cord containing a core of high explosive.
(20) Detonator means a device containing a
				small detonating charge that is used for detonating an explosive, including,
				but not limited to, blasting caps, exploders, electric detonators and delay
				electric blasting caps.
(21)
				Distribution box means a portable apparatus with an enclosure through which an
				electric circuit is carried to one (1) or more cables from a single incoming
				feedline; each cable circuit being connected through individual overcurrent
				protective devices.
(22) Electric
				blasting cap means a blasting cap designed for and capable of being ignited by
				means of an electric current.
(23)
				Electric grounding means to connect with the ground to make the earth part of
				the circuit.
(24) Employee means a
				person who works for wages or salary in the service of an employer.
(25) Employer means a person or organization
				employing one (1) or more persons to work for wages or salary.
(26) Explosives means any chemical compound,
				mixture or device, the primary or common purpose of which is to function by
				explosion. Explosives include, but are not limited to, black powder, dynamite,
				nitro-glycerin, fulminate and ammonium nitrate when mixed with a hydrocarbon
				plus high explosive ingredients.
(27) Face-to-wall means that part of any mine
				where excavating is progressing or was last done.
(28) Flammable means capable of being easily
				ignited and of burning rapidly as defined by the National Fire Protection
				Association.
(29) Highway means any
				public road or travelway used by the general public.
(30) 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.
(31) Inhabited
				building means a building regularly occupied in whole or in part as a
				habitation for human beings or any church, schoolhouse, railroad station,
				store, factory or other structure where people are accustomed to assemble
				except any building or structure occupied in connection with the manufacture,
				transportation, storage or use of explosives.
(32) Low voltage means electric potential up
				to and including 660 volts, medium voltage means voltages from 661 to 1000
				volts and high voltage means more than 1000 volts.
(33) Magazine means a storage place for
				explosives or detonators.
(34)
				Major electrical installation means an assemblage of stationary electrical
				equipment for the generation, transmission, distribution or conversion of
				electric power.
(35) Misfire means
				the complete or partial failure of a blasting charge to explode as
				planned.
(36) Overburden means
				material of any nature, consolidated or unconsolidated, that overlies a deposit
				of useful materials or ores that are to be mined.
(37) Primer or booster means a package or
				cartridge of explosives which is designed specifically to transmit detonation
				to other explosives and which does not contain a detonator.
(38) Reverse-current protection means a
				method or device used on direct current circuit equipment to prevent the flow
				of current in the reverse direction.
(39) Roll protection means a framework or
				safety canopy to protect the vehicle operator if equipment should
				overturn.
(40) Safety can means an
				approved container, of not over five (5) gallon capacity having a
				spring-closing lid and spout cover.
(41) Safety fuse means a train of powder
				enclosed in cotton, jute yarn and water-proofing compounds which burn at a
				uniform rate; used for firing a cap containing the detonating compound which in
				turn sets off the explosive charge.
(42) Safety switch means a sectionalizing
				switch that also provides shunt protection in blasting circuits between the
				blasting switch and the shot area.
(43) Scaling means removal of insecure
				material from a face or highwall.
(44) Secondary safety connection means a
				second connection between a conveyance and rope, intended to prevent the
				conveyance from running away or falling in the event the primary connection
				fails.
(45) Semiconductive hose
				means hose having an electrical resistance of not less than five thousand
				(5000) ohms per foot and not more than two (2) megohms for its total length,
				used in pneumatic placement of blasting agents in boreholes.
(46) Sprung hole means a blasting hole
				chambered or enlarged to take an increased charge of explosives.
(47) Stemming means the inert material and
				the placing of such material, on top of any charge of explosives.
(48) Stray current means that portion of a
				total electric current that flows through paths other than the intended
				circuit.
(49) Substantial
				construction means construction of such strength, material and workmanship that
				the object will withstand all reasonable shock, wear, usage and deterioration
				to which it will normally be subjected.
(50) Suitable means that which fits and has
				the qualities or qualifications to normally meet a given purpose, occasion,
				condition or function or circumstance.
(51) Travelway means a passage, walk or way
				regularly used and designated for persons to go from one place to another while
				at work.
(52) We t drilling means
				the continuous application of water to the back or bottom of the drill holes
				while drilling.
(53) Working place
				means any place in or about a mine where work is being performed.
*Original authority: 286.060, RSMo 1945, amended 1947, 1980
					 and 293.630, RSMo 1959.