-1L3- Tethel dose studies have been done on the same strein of pigs at N.R. D. L. with 10009 k.v. x-reys und2r conditions desizned to Sinmalete those at the test site. A walk- refrigerator has been revamped to arrroximete the temperatur?, infre-red light conditions, meen humidity snd minimum eir flow at ststions. Animels ere given 4 5 hour rides before and after irredie-ion in closed trucks to meke exnosure conditions «8 neer those in the field. ss possible to Jog exoeriments of a comp mb le nature will be completed soon. morte lity studies will Histolozicel otudies: Xo be done et test site. “hirty-two dogs will be exynoted to a 36 d-y 1.9. 105 (ap-roxvinately 550 gaara roentsens). on a They will be sscrificed rendom besis two et ea tine. secrifice The times of heve not been decid d definitely and will depend upon the outcome of current studies at the N.R.T. It is probable that three Zrouvs will be sacrificed during the first 24 hours end then one rair ner dey theresfter. Coma nder Tullis «ill be Snodect officer in che rge oF these studies on pigs, while Dr. Arthur W. Zaton (Savy) will conduct the studies? on the dozs. (201. De Coursey will not nersiciznete in this wort.) As fercs I cen tell from tr lking to the pethologists at Rocnester this dessa alone should give infornation whereby the ecuivelent dote of 1050 k.v. x-reys can be deternined to within 50 roentgens. These eninels will elso be used