MEMORANDUM FOR: SUBJECT: 160 March 1954 CJT? SEVEN Repert on “Soil and Yator Sampling Mission 1. In compliance with your oral instructions, the undersigned visited "ket j: 2. Tho first four atolls word visitod by Marshallese intorpretcr Taimshi Erikub, Maleolap, Wothe, Majure atolls in tho Marshall Islands 5 through 7 Harch 1954 for the purpose of obtaining carth and drinicing matcr sanplos, and of masu ing gamma cay doso ratcs, and alse checked tho radiological condition of the S.S. ROQUE on its arrival at Majure 7 March 1954, “ and the writer by msans of an UFel amphibleus aircraft. Majure mas rcachcd by C=u7. Erikub might hawo beon omitted since it was not inhabited, boing property of tho Wotjo tribe which geos thoro only cecasionally to gather copra. unknown until aftor the visit. ) 3. (This wm: At cach atoll, aly tho principal inhabitod ialand was visited, at cact visited island an offort was mado to composo a representative seil avcrago by collecting into ea singlc sontainor sovcral sanplcs, cach appracimtcly amc squer foot of arca and eno inch depth. Water samplos wore colloctod from the principe sources currently in uso. ACES, Ths gamma doeo ratcs aro avoragos for the inhabited be With rogard to cortain miner discropancios betwoon the survey acthods u by Major R. D. Crea and the writor; it was originally plannd te scrform th sur jointly, and whon it bocams advisable to scpnrate and survoy difforent atolls, r timc remained for discussion of dctails of tochniques. 5. Gammeray dose rates on Yotjo and on Erilmb aro cach the average of MX and AN/POR=39 avorage readings which agreed roasenably woll, Tho MX-5 ms rendc inoperative whan the rubbor lifo raft was swaapod by surf on the first attcapt + launch from the bosch at Erilab. Following tho Netho mrvey, the POR-39 develop a tomporaturo=dopandert, roading of 0.4 < 2 or/hr, so that lator readings in this range arc of very dubious reliability, 6. Tho following tabulation summarises tho atoll surwy. Wator Samplo:s $ is Soil, W is Olde Is RATT SAMI SLD WOTUE ORMED $$ 3-5 apfnn, l-boach, Janidevil Lo) 4 woll plus 4 catch basin. ERISUB SS Mars 1400 36 1715 ago, leback village. 1.5 orfhr. leaidevillage, 2 om path te beach. No inrabi ants, no wator supply found. pd - x ERIXUB S Mar