WV Underground Miner Study Guide Questions and Correct Answers

WV Underground Miner Study Guide Questions and Correct Answers When should you don your SCSR? - Correct Answer At the first sight or sign of smoke, fire or 50 ppm CO How often should you do a visual inspection of your SCSR? - Correct Answer Everyday before going underground What is the minimum quantity of air flow required in all working faces? - Correct Answer 3000 CFM How should a man-trip be operated? - Correct Answer Under full control at all time What is the maximum speed a man-trip can be operated? - Correct Answer 12 MPH How many red hat (apprentice miners) can a black hat (certified miner) be in charge of at any given time? - Correct Answer One (1) What is the purpose of a face line brattice or line curtain? - Correct Answer It's a curtain hung from the last open crosscut to direct air into the face to eliminate dust and gas build up in the area On a belt conveyor that is not used for transportation of coal miners, at what distance are stop and start controls required to be installed? - Correct Answer At least every 1000 foot What effect does the presence of small amounts of methane have on the explosibility of coal dust? - Correct Answer It increases the explosibility . What is a check curtain? - Correct Answer A temporary curtain erected to deflect air and can be traveled through by mobile equipment and miners