Jack Clark, J-DO T. Le Shipman, Me De over what-appeara tobe€. chango:ee ments: for‘those members"‘ot the Laboratar ‘tively in ‘test.operat couke go fer’as’ 1t(48:"reascazble-and’proper; ‘be'uniformy ‘statedits requirement)!which will be féund, in: uaich was published;in' June 3}. chest’Xereys dt. La: hey ave mation-has beenconducted’during the t' oman not be ‘necessary, _ provided a‘ record “wiation from.which wenld disqualifya: paren fron* ‘ Padiation, ‘With onl). one: of ‘these requirements can We ’ J% is stated:‘that a°‘otal red bloodcell! count above iG , eee susha. bloodcount ie fairly,cmon etLos hefar‘ap Loo lamer: personnel4s concerned; ve will’ ous= Stipulation that .chsst Xerays as often:‘agtevery : hi gary. -For-Laboratrry workers. under‘45 years: of. age _ eae chest X=riyvs oftener than once ‘alyear,.and ‘£6 _ than once in'six nenths. We shall also use our’ discrotion “test director. nda task force commander: that‘‘those area are presumably and to the best of our knowledge ._ Bdetuatephysical. condition:to , withstand, eethe vigogs . ‘tt might be wel) at this: time to digress:masentarily ti Fc ; the: ques tion of chest X-rays. The usual chest Xeray taken with: standard.equipment, © using the smal). sized film, delivers to the individual's chest a-dose'which.”’ : averages from 250 to 300 mr. The exposure with the full sized WASAThye film is slightly less. In both cases the cautpnent is shielded*so that exposure to other parts of the body is minimal and insignificant. It is generally held by the best authorit} that such ogg MEBICINE, HEALTH Dot ‘ARCHIVES ce er mene TER