SECRET Project 9: Gencticnl Effects of Atom Bomb Radiation Objectives: This serics of proposals involves the exposure of biological material whose genctic response to conventional forms of ionizing radiation and to atom bomb radintion is knowne It is hoped to extend and complement carlizr studies of mutations, mutetions rates, ctc. In the case of Neurospora, reversal of mutations obtained at Bikini will be sought; and adcitional chemicel mutants will be looked for. The problem of the high incirence of chlorotic kernels in corn cxposed at Bikini will be studicd further. Proecdure: Most of these materials will be exposcd also as biological dosimeters; but also samples will be place? in the very high dosage range. Most of the materials will be returned to the U, S, for further study. Aspergillus ond Nouruspora will be cultured in the Island laboratory before the tests, Responsible Agencies: Fanaandothers ecreals U. S. Department of Agriculture, md NME Aspergillus terreus: Oak Ridge National Laboratory, and NME Oak Ridge National Laboratory, and NME Neurospore cressa: Project 10; 34a) Effect of Atom Bomb or Local Fauns ant Flora Rosponsible agency: U, S. Dopartment of Agriculture, and NMB jectivess o study the thormal and blast effccts of atom bomb blast on local fauna and flora, to cxtcnd observations at Bikini and Eniwotok, fields: Project 11: 5.4426 Neturalists, quolified in a number of birds, insccets, plants, etc. may be available. Dosimetry with Mineral Substances Responsible Agency: National Military Establishmont Objectives: T. conduct further studies on certain minerals: Vikor glass, activated halides, ctc, which are affected by fonizing radiation. Preliminary studies at the NMRI and at Bikini suggest that these agents may be useful, rugged, integrating dosimeters for personnel, and other purposes. Procedure: Samples of these calibrated radiation-scnsitive materinls will be placed in all enimal containers; and at 2 number of other stations where very precise physical moeasirement by other moans are being mades and at stations where high intensity is expected.