Lead exposure in outdoor firearm instructors.

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Abstract
This study was conducted to determine lead exposure of firearm instructors at an outdoor firing range, while cadets were firing nonjacketed and jacketed lead ammunitions. The breathing zone air for lead exceeded the Occupational Safety and Health Administration standard of 50 micrograms/m3 for two instructors during firing exercises using nonjacketed bullets. The use of totally copper-jacketed bullets reduced the breathing zone lead levels by 92 percent for instructor #1 and by 96 percent for instructor #2; subsequent blood lead levels showed a significant decline in both instructors.