~2The afternoon session was cpen:d at 1:30 Fk. with Dr, Hendricks rresiding, 4 16 ma mction picture film and slides were present.d to ©xplain “hn detail the oquipment, instruments and metheds uscd on a large scale for surveying the distribution of fallout of radioactive ish when atomic bomb tests are carricd out in continental United States, Some of the actual equipm nt was shown. This showed the procedures for collecting the radio‘etive dust on gumacd paper at the observation points scattercd around the country and, mailing to the atomic Energy Commission, where the many samples are handled mechanidally and efficiently, baked into ash, and are automatically measured wnd recorded for radioactivity. aft rwards, Dr, Harley used slides and printed mattcr to exclain the mathod fer analyzing minute quantities of radioactive substances included in th. material. Inter: sted questions wore asked by Dr, Miyake, Dr. himura, and others of the Japan es: delegation. Pr. Hendricks followed, using a printed text, giving a detriled explanation of the methods for protecting against various radicxictive contamination of workers and the laboratory when carrying out cxperiments with various ridioactive elements, These methods included such fictors as the construction of laboratory rooms ind the prevention of contwination of th: equipment and d.ss surfaces. a fow guustions wure asked xbout this subject by the Japaies. delugctes, such 139 what should be done for dis~ posing radioactive waste wrter down the drvin, which had been used in the liberatory. also Dr, Hirlsy was asked whxt should be done to disrose safely of the samples of radioactive dust, to which question he inswered that all ot the samples were stored for rucord. The day's conferences closed at 4 o'clock, He é#a dba