This had to be more powerful than some of the low yield nuclear bombs in Nevada in the late 50's and early 60's.
Beirut explosion in Slow motion
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“On a scale, this explosion is scaled down from a nuclear bomb rather than up from a conventional bomb,” said Roland Alford, managing director of Alford Technologies, a British company that specialises in disposal of explosive ordnance. “This is probably up there among the biggest non-nuclear explosions of all time.”Comment

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