Nec wich (2) Weg (C) -. Protection Against Radioactivity — StudiedBy US-Japon Scientists : AOS LOS i g { } Both Japanese and American atomic scientists Wednesday debated, and demonstrated, a variety of methods and detection instruments for measuring the intensity of atomic radiation, Also discussed at the third day session of the five-day radiobiological conference in Tokyo were the methods for protecting against. the danger ing air and removing a radioactivity particles for measurement in the laboratory.j Particular interest: was| evinced by the Japanese dele-/ gates in the filter papers and}. other components used to such | in yadioactive particles from the air, and also in the gum-_ med paper employed at more! than a hundred experimentary ; stations in the U.S, to collect. contamination samples of the particles falling ° those workers who are working from, the atmosphere or brought. at laboratories or plants ex- down by rain or snow. Discussions were centered | perimenting with the radioover the standard methods of. active substances. Among those instruments in calibrating instruments, and: of radioactive demonstration was the sampler—the equipment air the use and interpretation of ' em-' readings on beta-gamma sur- ployed in the U.S. for sampl- vey instruments, film badges,ionization chambers, scintilla- tion counters and different: types of instruments for measuring neutron radiation. Huge Narcotics Den Uncovered It was pointed out that differ- ent readings as between two instruments in the same laboratory or as between in-' two different Wednesday struments in US DOE ARCHIVES 326 U.S. ATOMIC ENERGY COMMISSICN RG._ DoeHL ToRIAN Collectio-. Box Folder (0BM 132 3365 * 2/ Honjo Police raided the Hotel New York, a laboratories or as between in- r rickety downtown inn at Muko- struments in different countries. jima, Tokyo, .and seized 10,000 come from Jack of uniform ampules of philopon powder, calibration, As for the American methods 200,000 ampules of philopon and a set of philopon manufacturing machine, for surveying the distribution: 39, active dust is first collected on: of fallout of radioactive ashi The police also arrested the following the atomic bombtest, hotel manager, Kenzo Yasuda, it was explained that radio-. a Korean, violating the on charges Drugs of Control gummed paper at the observa- Law. Tanshin Takayama, also tion points scattered across the a Korean and suspected ring- U.S., and then these samples are mailed to the laboratories, leader, was already at large. The hotel, surrounded by baked into ash, and automaticthick concrete wails and ally measured and recorded for absolutely shut off from out- radioactivity, At the press conference folside, was formerly operated by Nicholas V. Zapetti, an Ameri- lowing the day’s session, the can, The hotel employees said American delegation members they have not seen Zapetti said they have been exchangsince April this year, and the ing various samples with their inn hag been operated by a colleagues, and that they are handful of Koreans, who chang- willing to do the same with ,ed the former prostitution the Japanese scientists in the house into a philopon manu- future. (Photo shows Dr. Eisenbud facturing center. One of the girl employees said she heard the hamming of an electric motor in a locked | room through davs and nichts, : giving explanation about the air sampler while Dr. Harley and Salisbery watch nearby.) VT 2 Mm Ll | NOW ARCHIVES