Posted on December 10, 2014 by WeirdoIf the Hoover Dam’s 3.25 million cubic yards of concrete was…. If the Hoover Dam’s 3.25 million cubic yards of concrete was poured all at once, it would have taken 125 years to cool.
If the Hoover Dam’s 3.25 million cubic yards of concrete was poured all at once, it would have taken 125 years to cool.If the Hoover Dam’s 3.25 million cubic yards of concrete was poured all at once, it would have taken 125 years to cool.