. -" sae where thes. operations sre to by oxte sive 12 niture ™M order that hacards to personnel May be d-creas-d by ‘normal deeay of shert lived ra¢ioactiv~ noter’als. (4) Operations of this sort can b> conduct-d with greater safety bo empkoying personnel in sncll nunbars with timoly rolicfs. FRANK I, WINANT, JR., Commandsr, U.S. avy, Commander, Tesi Croun 7.0 -— ee ; ; FIRST “DGRS JiNT Radfolocical S-fety CftLeor Joint Tes Forse sivat 25 Nay 1943 Ts Conmander, Joint Tisk Fores SEVTN. 1. Forwarded recommending avctroval. 2. Th- followins recomend rtions are added: (a) In Qneration SANDSTONES tie ractologiensl sfety eronv was craninod cig toameidsc ssporatcly fromthe scisitirie .rowy, This vas don: witit a view te insuriac thet tls safety of prrsonnel would not bs spbearcinetes to the urroney of recovery of salentifie data. “1though t'- conduct of tie test sowed no toueene. te arzard Persennel in nreeurins scientific deta, it Sows advicaole, nevertheless, te rearfirnm this ecarend cauclity botwern the tue srougs os 2 sdun’ princtiote, (b) Certrin studiss of toxicity of radioactiv. materials should ‘7 initirt-d end cerricd tThreugh te cempliction orter to Tutur> tests in order te provic, laradists sné vositive basic Larormation frp Une Radsolesical Savery OFYicer ami che RadFolorical Corety Greua Commacer., Thos. eheald Siclude st inss of radioactively contaminst sd aust ond water, Th» sxnet conditions af each test af any contonyl Tt sc changes in woapen dn_?tgn should ve osnsidered in thos: studies. — te) Sxreriones at Operstian SANDSTCRE indientes the NeNi tec a variety of ssevies tests whieh would contrioute te the besie hnewledsa reaqudred for radiviosical safety and redielotical derense.