Mission Number 284
24 July 1945
Sumitomo Metal Industry at Osaka (90.25 - 263A)
Number A/C Airborne:
% A/C Bombing Primary:
91.11% (82 Primary and 4 Opportunity)
Type of Bombs and Fuzes:
AN-M56, 4000# L.C., with instantaneous nose and non-delay tail.
Tons of Bombs Dropped:
488 tons on Primary and 26 tons on Opportunity.
Time Over Primary:
241251K - 241322K
Altitude of Attack:
19,900 - 22,100
Weather Over Target:
0/10 - 3/10
Total A/C Lost:
Resume of Mission:
Strike photos indicated a majority of bombs fell on
Target, which was assumed
to be destroyed. A few bombs
fell on adjacent Targets, 264 and 53.
Reconnaissance later revealed that 76.9% of the Target
was damaged, raising the cumulative damage to 89.6%.
Of the 244 bombs dropped it was estimated 115 fell within
1,000 ft. of the MPI. Four
A/C were non-effective. All
bombing was visual. Heavy
caliber flak varied from moderate to intense and was accurate.
One B-29 was shot
down and 50 damaged by AA fire.
The A/C lost received a direct hit by flak over the
Target and it broke
in two. All 11 men missing.
No E/A seen.
Forty-two B-29s landed
at Iwo Jima.
Average bomb load: 15,193 lbs. Average fuel reserve: 645