Conversion scale Letter} 1’Cs gamma exposure TOownmMoog> label} rate” (uAV/h at 1m) 0.12 0.35 0.75 1.4 23 4.0 6.0 < 0.12 0.35 0.75 1.4 2.3 40 6.0 9.0 * Extrapolated from aerial data obtained at an altitude of 38 m (125 feet). 0 200 400 600 800 Meters [Ea 0500 1500 2500 Feet Figure 1. The locations of seven sites (R9, R13, R18, R20, R23, R25, and Pit 22) at Rongelap Island where LLNL madein-situ gamma measurements to compare with the EG&G contours developed from the aerial survey in 1978.