LABORATORY Or RADIATION BluLBGY Kabelle stand 3’ above ground Sta. Area or iocality shieid 1 Closed . 08 Li open . 40 closed _ 10 . 10 Jil 14 .o5 .30 . il .O9 ~ 14 . 30 . 14 .18 _ 30 14 .19 . 70 19 _19 17 12 . 16 open .12 or on No, 1" above ground . 70 2 .15 .45 . 19 . 80 Ll. 1 7 Jil li . 60 J1i Jil . 60 It .12 45 .12 13 . 50 11 .10 39 .15 . 60 10 12 _39 _O9 11 . 40 . 03 . 04 . 05 . 18 il .12 . 30 1,5 _412 .1i .1l . 80 . 12 * 4 aah a . 096 Lt _ 30 ~12 03 . 08 . 04 02 . 022 Average of first reading Average of second reading _ 20 . 92 _0O5 , O22 Lod _l4 _12 . 69

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