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<br />.--------------------------------------------------------------------------a----------1 <br /> <br />7535 SILVER IODIDE GENERATORS AND PUBLIC HEALTH : <br /> <br />KEY WORDS: air pollution; irrigation; public health; silver iodide; tox- : <br />icity; water pollution; weather modification : <br /> <br />ABSTRACT: Exposure of the operator of a cloud seeding generator is compared <br />with threshold limits for prolonged exposure established by the American Con- <br />ference of Governmental Industrial Hygienists. For silver iodide and its complexes, <br />iodine and carbon monoxide, maximum exposure was found to be greatly below <br />hazardous levels. Concentrations of silver and iodine in precipitation from seeded <br />storms were found to be greatly below permissible levels set by the U.S. Public <br />Health Service for drinking water. The inoffensive nature of the effluent from a silver <br />iodide generator is emphasized by contrasting its chemical content with that of <br />automobile exhaust. <br /> <br />REFERENCE: Douglas, William J., "Silver Iodide Generators and Public Health, n <br />Journal of the Irrigation and Drainage Division, ASCE, Vol. 96, No. IR3, Proc. Paper <br />7535, September, 1970, pp. 273-280. <br /> <br />I <br />'il <br /> <br />i <br />i <br />