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The Boeing B-29 Superfortress bomber cost more than the atomic bomb it was built to carry
The B-29 program cost more than $3 billion in wartime dollars, making it the single most expensive weapons development effort ...
Summary and Key Points: It's remembered for one world-altering act: the B-29 Superfortress (check out our original photos below) remains the only aircraft ever to drop a nuclear weapon in combat, ...
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