Ste 2“ tp WB i ct A no mee aE “4 ve eS adem “\ r *~ ~* “Otegey * Ct pgbags bw .Soh 4 ~ Ve wag hEyends ak : 7° 3 wae as . a be, * id ve - : vet Vena ‘ ~a som ne ae : wee ® ~ 4 y at 1 sei de “yf ’ ;; 4 . my wo v, he ty es me. . yb i “ Fig. B.16. 1.d. The gamma background exposurerate (uR/hr) at 1 m above the ground, measured with a portable Nal scintillation counter. . . “a t va fe - ae 2S

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