New York Post
Oh, dam!
A large explosion rocked the Hoover Dam during a tour of the facility early Tuesday, dramatic video shows.
A clip posted to Twitter minutes after 10 a.m. local time showed a huge plume of smoke emanating from the dam along the Colorado River on the border of Nevada and Arizona.
“Touring the #hooverdam and heard an explosion #fire,” the visitor, Kristy Hairston, tweeted.
An official giving a tour of the 726-foot concrete structure told visitors to get their cellphones and cameras out to catch footage of the blast.
