analytical procedures required to correlate the results of this project. Since the animal colony is considered akin to humans in these studies,’ medical care comparable to that which would be accorded humans willbe given the dogs up to the time of sacrifice or natural death. UNCLASSIFIED section.) gum. (End of - . a -and discussions were held to develop and evaluate the various injection an ote ane Conference: on toxicity studies. A steering committee on toxicit studies being conducted at the University of Utah met in Salt: Lake city on | June 17-19, 1953. These investigations inciude large-scale experiments . with animals on the Long-time toxic effects of plutonium, radium, and meso thorium. Serial injections of dogs with the elements have been under way, Tea to final draft of the Proposed handbook. ee are eae eae ‘active materials has’ been. planned in cooperation with the Division of” a “Construction and Supply. A-conmittee meeting of Washington and operations offices' representatives was held during May and June to discuss contents of the proposed handbook, and also to draft recommendations for possible | changes in Interstate Commerce Commission regulations. Consultation-is | available on this subjectfrom the Bureau of Explosives of the Association of American Railroads. Interim meetings will be continued in daly tending

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