ventilation system, The mine uses a powerful __________ to bring fresh air into underground areas and remove contaminated air., methane, __________ is a dangerous gas that can accumulate underground and cause explosions., gas control, The mine's __________ procedures help remove dangerous gases from the working areas., bleeders, The mine checks the __________ on the methane drainage system every month., dust control, Good __________ is essential because excessive dust can cause health problems and contribute to explosions., sprayfans, The mine uses __________ to reduce the amount of harmful dust in the air., hood enclosure, Workers installed a __________ around the equipment to prevent dust and contaminated air from spreading., drainage, The mine has a special __________ system to remove water from underground areas., exhaust, Diesel vehicles produce __________, so it is important to keep it away from areas where workers are breathing., heating, During extremely cold periods, the mine uses __________ equipment to keep workers comfortable., cooling, In hot conditions, __________ equipment helps reduce the temperature underground., dehumidification, __________ equipment removes excess moisture from the air and makes the underground environment more comfortable.

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