Hoover Dam transformer in U.S. explodes(1/6)

Firefighters mop up after electrical transformer equipment caught fire and was later extinguished on the Arizona side of Hoover Dam, near Boulder City, Nevada, U.S., July 19, 2022. (Photo/Agencies)

A transformer fire caused an explosion at the Hoover Dam on the Colorado River along the border of U.S. states of Nevada and Arizona Tuesday morning. No one was injured in the accident and there was no threat to power supply.

Firefighters mop up after electrical transformer equipment caught fire and was later extinguished on the Arizona side of Hoover Dam, near Boulder City, Nevada, U.S., July 19, 2022. (Photo/Agencies)

Firefighters mop up after electrical transformer equipment caught fire and was later extinguished on the Arizona side of Hoover Dam, near Boulder City, Nevada, U.S., July 19, 2022. (Photo/Agencies)

A view of a fire at the Hoover Dam on the border between Nevada and Arizona, U.S., July 19, 2022. (Photo/Agencies)

A view of a fire at the Hoover Dam on the border between Nevada and Arizona, U.S., July 19, 2022. (Photo/Agencies)