* . 3 <o* ewe, Fig. B.35.1.d. The gamma background exposur. e rate (uR/hr) at 1 m.above the ground, measured with a portable Nal scintillation counter,
* . 3 <o* ewe, Fig. B.35.1.d. The gamma background exposur. e rate (uR/hr) at 1 m.above the ground, measured with a portable Nal scintillation counter,