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DuQuoin, Ill., Nov. 21, 1905.
To the Editor:
—After an experience of 25 years in one of the largest coal mining towns in southern Illinois, and during this time having under my observation from 700 to 1,200 coal miners; and after careful enquiry among the oldest miners in this locality as to the number of coal miners that have been infected with this dreadful disease, I have been forced to the conclusion that bituminous coal miners, while actively engaged in their occupation, are practically immune from tubercular infection.About seven years ago I commenced the treatment of whooping cough by sending the patient down in the mines immediately after the miners had fired a shot; having the patient inhale the gas and powder smoke for one and a half to two hours at a time. I found that one or two sittings was sufficient to effect a cure in from
Carr MC. Is the Bituminous Coal Miner Immune from Tubercular Infection While Actively Engaged in His Occupation? JAMA. 1905;XLV(25):1892. doi:10.1001/jama.1905.02510250058019
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