"Nagasaki was also utterly destroyed!!!!"
The United States Strategic Bombing Survey (USSBS) concluded that 27.2% of the buildings in Nagasaki were destroyed by the bomb and the subsequent massive fire, and that 10.5% were heavily damaged, making a total of just 37.7% total damage for the buildings.
They also determined that 35,000 Japanese died (out of a total population of 263,000 on the day of the bombing).
This gives a death rate of 13.3% (later estimates by other parties are significantly higher with claims of 60,000 giving a death rate of 22.8%).
The vast majority of deaths at Nagasaki were located in the Urakami Valley, though they note that even close to the hypocenter "people in the tunnel shelters escaped injury".
Here is a photograph of Nagasaki AFTER the bombing:
Just like the Tokyo example, the crisp line between destruction and undamaged buildings reveal that the damaged area was BURNED in a spreading fire - in the half-hour following the detonation before the fire arrived, the destroyed zone would have looked just as undamaged as the intact area!
The photograph above depicts the road corner in the photo below (the right angled road bend found in the top-right of the photo below).
Nagasaki train station can be seen on the map, and is shown on the photograph above as well. The train station was at the lower end of the valley and it is a landmark for the zone where the huge fires from the valley finally petered out.
Mount Kompira (shown above on the right side of the map) had acted as a shield against the blast damage, initial radiation and heat pulse. First, the steeply enclosed industrialized Urakami valley had been intensely irradiated, then the wooden homes and larger factories were smashed by the blast-wave, and then the stricken valley was subject to a terrible fire consuming all the wreckage. However, the main part of Nagasaki city escaped serious damage - the topography of the city had saved it.
- Exactly 37.7% of Nagasaki City was destroyed or seriously damaged by the atomic bomb and the subsequent massive fire.
- Estimates suggest less than a quarter (22.8%) of the Nagasaki population died.
- Nagasaki city centre and Nagasaki harbour were left largely intact.
- Persons located in bomb shelters in the blighted Urakami valley survived and escaped uninjured.