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Metal and Nonmetal National Mine Rescue Contest Rules

Metal and Nonmetal National Mine Rescue Contest Rules

Metal and Nonmetal National Mine Rescue Contest Rules

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RETURN AIR - The air that has passed through theworking areas of the mine.RIB - The wall of a mine opening.ROOF BOLTER - A machine designed to drill holes inthe roof <strong>and</strong> install bolts.ROOF BOLTS/ROCK BOLTS - A long bolt inserted <strong>and</strong>anchored in holes drilled in the rock.ROOF JACKS - A roof support designed for immediatetemporary use.SCALING BAR - Tool with a flat point <strong>and</strong> a heel used topry in a crack of the rock.SEAL - A stopping built of greater thickness <strong>and</strong> moresubstantial construction used to isolate ab<strong>and</strong>oned areasof the mine from the active workings or to isolate a fire.SHAFT - A vertical opening of limited area compared withits depth, made for finding or mining ore, raising ore,rock or water, hoisting <strong>and</strong> lowering workers <strong>and</strong>materials, or ventilating underground workings.SKIP - A hoisting bucket, which slides between guides in ashaft.SLUSHER/SCRAPER - A machine for transferring orloading rock by pulling an open bottomed scoop back<strong>and</strong> forth from the face to the loading point by means ofa drum hoist, cables <strong>and</strong> sheaves.SPLIT - To divide the air current in two or more separatecurrents.STOPE - An excavation in a mine, other than developmentworkings, made for the purpose of extracting ore.STOPER - A pneumatic hammer drill used for drillingupward.STOPPING - A permanent or temporary wall or partitionconstructed across a passageway to direct the ventilatingair.100

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