that would indicate that euch katerial Sas bees present is this crea. Tae beta eounting asthod fer tritiue has been used extensively ap a large coaber of samples during the past nenih. Jhile this asthed ie in uss, various aodifications are beizg istreduesd i: hapes ef iapreving 18 stg2) further. AB activated chareee) adserbent unit das seen installed ip the Phete iab Ob am experimenta) basis to dstamine its effactivensas in eliminating meiannse coders. This unit ales effere name pesaibllities fer air smpling fur cases. In eooparstiieoa with the Engineering Grou of GM@Division, a method has been developed for cheeking the effiaiensy of ‘he mm hoods to be installed in DeBuilding. Assistance with alpha senitoring problems at 4 Site ant Pajerite vas given in osoperetion its Cewe o-l. Tve nexbers ef the Greup attended the arumal mevting ef the serene Industrial Rygiame Asseciation end cther organisations in Atlentie City. 4 paper was preemie: there op “Rebeust Vertilation on Nachine Teuals Uset on Materials ef High Texicity*®. ‘The sme persons alse pertiainata! irc discussion er the cortral af beryili.m nagerds at 2 classified meeting af AK ani contractors! persctmais wertine ir te field of imhustrial realty. ) end @ate of -2e Creep Leader returned Sras Sotwetor et the clese of this reporting period. 127. . __* ‘eation) (Date) ‘ ’ a Air emmples callestad or field tests andes fur! ee ee 00131125 oI? 1044532 LANL