Small fire at Hoover Dam extinguished after explosion

Fire put out before firefighters arrived on the scene, and there was no disruption to the power grid

A transformer on one of America's tallest dams briefly caught fire on Tuesday morning before the Hoover Dam fire brigade extinguished the flames.

No one was injured in the blaze and there is no disruption to the power grid, the Bureau of Reclamation said in a statement. The blaze was extinguished within about 30 minutes before firefighters from the Boulder City fire department arrived on scene, the Nevada city reported on Facebook.