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However , since the miner has not completed the 24 hours of " New Miner Training , " the miner is required to work where an experienced miner can observe his or her work practices until the 24 hours of training is completed . Water is sprayed on the area to be cleaned before the miner begins to sweep . I know the argot and the quartz-mining and milling industry familiarly ; and so whenever Bret Harte introduces that industry into a story , the first time one of his miners opens his mouth I recognize from his phrasing that Harte got the phrasing by listening - - like Shakespeare - - I mean the Stratford one - - not by experience . You will do that if the belt goes down or if the miner goes down . Under this paragraph , you would not be required to provide such a miner with the training required by paragraphs ( a ) and ( b ) ; instead , you would simply be required to inform the miner , before the miner begins work , of changes at the mine that occurred during the miner 's absence that could endanger his or her safety or health . It means that one - - that the exposure of each miner has to be maintained and the exposure on each shift has to be maintained .