Add Yahoo as a preferred source to see more of our stories on Google. An explosion has occurred at the Hoover Dam in Nevada (Screenshot / Twitter / Kristy Hairston) A fire and explosion rocked ...

An apparent explosion caught on video by alarmed tourists at Hoover Dam sparked a fire, but it was quickly extinguished and didn’t halt operations, authorities reported. A transformer caught fire at ...

A transformer fire at Hoover Dam on Tuesday morning shot plumes of smoke into the air but did not injure anyone or threaten the power grid, officials said. Boulder City Fire Department is en route to ...