Several explosions occurred at a fireworks manufacturing factory, causing the death of 3 employees and injuring 58 persons. Two workers were carrying out shell-production work at a charging and forming workshop. Other workers might have been working at a general materials warehouse. Since the workers concerned died, the facts cannot be confirmed. According to a nearby employee, white smoke filled in and around the general warehouse just before the first explosion. A large amount of stored fireworks kept in the general warehouse and the raw materials warehouse exploded one after another. The area in 2 km radius around the factory was damaged. Fifteen factory buildings burned. Outside the factory, 16 private houses burned, 7 buildings collapsed and 50 partially. A total of 558 buildings were partially destroyed, including window glass damage. 18 vehicles burned out and 20 were partially damaged. The telephone cable was damaged by fire, cutting off 234 telephone lines. The cause of ignition has not been determined. Large quantities of fireworks / explosives in the warehouses (which were not explosives magazines, that is where the storage of explosive substance was prohibited) might have been ignited by impact or friction on opening or closing the shutter of the warehouse. Ignition could also have occurred by temperature rise from reaction heat or static electricity. Explosives and raw materials were managed improperly (safety management system, cheks, safety education…). The fireworks manufacturing company went bankrupt after this accident.