Despite the center of Hiroshima City being ruined, manufacturing of Hiroshima Prefecture recovered to the prewar level several years after the war. We could point out such factors that contributed to reconstruction of Hiroshima industry: the damage of major plants located around Hiroshima City was much less than commonly imagined; Hiroshima Prefecture had relatively many workers, above all female workers, compared to the national average; the military institutions around Hiroshima were smoothly transferred into the private sector; release from regulation during the war stimulated the entrepreneurial spirit of enterprisers; the flow of people from the suburbs and evacuation places became a labor force.
Productivity of Hiroshima Prefecture had been below the national average, but it improved after the 1950s. Until the middle 1950s "the basic supporting industries" gathered in the center of Hiroshima City, which consisted of many specialized small and medium sized businesses. They have supported trial production and final assembly of parent companies.