Nagasaki Nuclear Expoision

(Compiled by Nagasaki Municipality | Destruction of Buildings and Houses | Number | Percentage | Total in Nagasaki (before atomic explosion) | 50,000 | 100.0 | Blasted (not burned) | 2,652 | 5.3 | Blasted and burned | 11,494 | 23.0 | Blasted and/or burned | 14,146 | 28.3 | Partially burned or blasted | 5,441 | 10.9 | Total buildings and houses destroyed | 19,587 | 39.2 | Undamaged | 30,413 | 60.8 |
TABLE A
Estimates of Casualties | Hiroshima | Nagasaki | Pre-raid population | 255,000 | 195,000 | Dead | 66,000 | 39,000 | Injured | 69,000 | 25,000 | Total Casualties | 135,000 | 64,000 |
The relation of total casualties to distance from X, the center of damage and point directly under the air-burst explosion of the bomb, is of great importance in evaluating the casualty-producing effect of the bombs. This relationship for the total population of Nagasaki is shown in the table below, based on the first-obtained casualty figures of the District:
TABLE B
Relation of Total Casualties to Distance from X Distance from X feet | Killed | Injured | Missing | Total
Casualties | Killed per square mile | 0 - 1,640 | 7,505 | 960 | 1,127 | 9,592 | 24,7OO | 1,640-3,300 | 3,688 | 1,478 | 1,799 | 6,965 | 4,040 | 3,300-4,900 | 8,678 | 17,137 | 3,597 | 29,412 | 5,710 | 4,900 - 6,550 | 221 | 11,958 | 28 | 12,207 | 125 | 6,550 - 9,850 | 112 | 9,460 | 17 | 9,589 | 20 |
No figure for total pre-raid population at these different distances were available. Such figures would be necessary in order to compute per cent mortality. A calculation made by the British Mission to Japan and based on a preliminary analysis of the study of the Joint Medical-Atomic Bomb Investigating Commission gives the following calculated values for per cent mortality at increasing distances from X:
TABLE C
Per-Cent Mortality at Various Distances Distance from X, in feet | Per-cent Mortality | 0 - 1000 | 93.0% | 1000 - 2000 |