Cause of Severe Damage -- (14 of 21)
Fig 14.1 Structure of shelter to hide from incendiary bombs
Shelters called "Bo-ku-go(Japanese)" did not help people to survive at all. They did increase the number of deaths. Japan's authority told people to make a small shelter in each house and constructed public shelters for those who could not have their own shelter.
Since the fire was so strong that the shelters themselves were burned. Or, if not burned, people were killed in shelters by heat and gas. The most disastrous case in Nagaoka ocurred in the public shelter in Hiragata Shrine. About 100 people were killed in the shelter.