Why This Dam's Concrete Took 2 Years Instead of 100

Engineers poured enough concrete to circle the Earth twice — and left alone, it wouldn't have finished cooling for over a century. This is the untold story of how the Hoover Dam's builders solved a problem hiding in plain sight, and the two other "impossible" builds that faced the exact same invisible enemy. 🔔 Subscribe for more Engineering Fix #ConstructionHistory #Engineering #EngineeringMarvels #HooverDam