- Fig. B.32.1.d, . <a ye © ? é 7" «x . hee . . ~_& . r So . The gamma background exposure rate (UR/hr) at 1 m above the ground, measured with a portable Nalscintillation counter.
- Fig. B.32.1.d, . <a ye © ? é 7" «x . hee . . ~_& . r So . The gamma background exposure rate (UR/hr) at 1 m above the ground, measured with a portable Nalscintillation counter.