[A method for the prevention of silicosis among workers employed in quarries, pits and mines].
D000015:Abnormalities, Multiple; D002971:Cleft Lip; D002972:Cleft Palate; D003560:Cysts; D006801:Humans; D008046:Lip / Q000002:abnormalities; D008906:Mining; D012829:Silicosis / Q000517:prevention & control*
MINING; SILICOSIS/prevention and control