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[–] 11 points 1 year ago (4 children)

The first besides that manhole cover from the underground nuclear test, right?

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  • [–] 6 points 1 year ago (1 child)

    that's exactly what I was going to bring up.

    not one, but TWO.

    the original cover was such a significant point of research that they not only reconstructed a whole new experiment around it, but improved upon it to make it go faster.

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