Austin Keating on Horizon: "The #HooverDam would have taken 125 years to cool down after pouring the concret"

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The #HooverDam would have taken 125 years to cool down after pouring the concrete per the 2nd Law of #Thermodynamics, so they used #Refrigerated tubes to cool sections at a time youtube.com/shorts/wQWt72e…

10:15 PM · Mar 18, 2026 · 27 Views