tus 89 Fe Oe +: # Fig. B.39.1.d. The gamma background exposure rate (uR/hr) at 1 m above the ground, measured with a portable Nal scintillation counter. % Elevated levels may be due to nearby ®°Co source which was subsequently removed,
tus 89 Fe Oe +: # Fig. B.39.1.d. The gamma background exposure rate (uR/hr) at 1 m above the ground, measured with a portable Nal scintillation counter. % Elevated levels may be due to nearby ®°Co source which was subsequently removed,