Comparison: Heligoland Island Explosion and Grand Slam Bomb

Heligoland Island Explosion

Quantity: 1 | yield (tonnes of tnt): 3200.0 | Total yield (tonnes of tnt): 3200.0

Grand Slam Bomb

Quantity: 492 | yield (tonnes of tnt): 6.5 | Total yield (tonnes of tnt): 3198.0

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