100 METERS a sath hs B.23.1.d, 1 pale. “ ‘ g Bas The gamma background exposure rate (uR/hr) at 1 m above the ground, measured with a portable Nal scintillation counter,
100 METERS a sath hs B.23.1.d, 1 pale. “ ‘ g Bas The gamma background exposure rate (uR/hr) at 1 m above the ground, measured with a portable Nal scintillation counter,