Weapon scientist, George Rathjens, looked through SAC's atlas of Soviet cities, searching for the town that most closely resembled Hiroshima in size and industrial concentration. When he found one that roughly matched, he asked how many bombs the SIOP "laid down" on that city. The reply: one 4.5 megaton bomb and three more 1.1 megaton weapons in case the big bomb was a dud (the Hiroshima bomb was 12.5 kilotons). The execution of SIOP-62 was estimated to result in 285 million dead and 40 million casualties in the Soviet Union and China. Presented with all the facts and figures, Thomas D. White of the Air Force found the Plan "splendid." Disregarding the human aspect, SIOP-62 represented an outstanding technological achievement: