Abstract
Since 1956 aluminum phosphide containing tablets have been used for fumugation of bulk wheat in New South Wales in country storages. In 1960 and 1961 this method of fumigation was extended to seaboard terminals, immediately prior to shipment, under conditions of continuous occupation. Exposures to phosphine occurred over a wide range of concentrations, from zero when adding tablets to a maximum of 35 ppm when shipping. The physiological response to these was surveyed and most of those exposed exhibited symptoms of phosphine absorption in varying degrees.