They used plenty of concrete. I’m not sure which Cement Type was used for the mix.
The Three Stooges dam? They cut corners. Bet on it.
BTW. They claim that they did the first test on it and it was leaking through underneath the thing.
How much of this is factual..we will soon see.
#33. Re the concrete used to make the Hoover Dam. Don’t know what type it was either but I do know that they used Hoover Vacuums to clean up the site. /sarc