 An estimated 35 @,@ 000 – 40 @,@ 000 people were killed outright by the bombing at Nagasaki . A total of 60 @,@ 000 – 80 @,@ 000 fatalities resulted , including from long @-@ term health effects , the strongest of which was leukemia , with an attributable risk of 46 % for bomb victims . Others died later from related blast and burn injuries , and hundreds more from radiation illnesses from exposure to the bomb 's initial radiation . Most of the direct deaths and injuries sustained from the bombing were munitions or industrial workers . Mitsubishi 's industrial production in the city were also severed by the attack ; the dockyard would have produced at 80 percent of its full capacity within three to four months , the steel works would have required a year to get back to substantial production , the electric works would have resumed some production within two months and been back at capacity within six months , and the restoration of the arms plant to 60 to 70 percent of former capacity would have required 15 months . The Mitsubishi @-@ Urakami Ordnance Works , the factory that manufactured the type 91 torpedoes released in the attack on Pearl Harbor , was destroyed in the blast . 
