Thousands of men, 160 per truck, blasting virgin rock in the 1930s! Witness the raw power of human labor that built the Hoover Dam. #HooverDam #ConstructionHistory #EngineeringMarvel

Mind blown! 1950s tech CEO predicts smartphones and the internet. See David Sarnoff's uncanny vision for the future in this unearthed clip! #futureprediction #techvisionary #history #timetravel #prophecy #techhistory #innovation #techtimeline #visionaryleader #generationgap #futureproof #techthrowback