Three cases of mild lead poisoning were discovered among instructors at an indoor pistol range. These cases were characterized by blood lead levels greater than 100 mug/100 ml, free erythrocyte protoporphyrin levels greater than 450 mug/100 ml of red blood cells, abdominal pain, and, in one instance, by slowing of motor and sensory nerve conduction velocity. Exposure to airborne lead produced during revolver-firing and bullet-molding accounted for the lead absorption. Ventilation in the range was inadequate.
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P. J. Landrigan (1975) studied this question.
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