Dive Summary:

• Five linemen working for CenterPoint Energy sustained near-fatal injuries Thursday in Houston when an electrical vault they were working on caught fire and shocked the entire crew.
• The crew was hit with 480 volts of electricity and rushed to the hospital with severe electrical burns. All linemen were in critical condition, with one worker burned from the neck-down.
• “The vault is located just outside (the building), although it is not connected, it has a strong protective barrier around it,” a Houston Fire Department official said. “But the workers were inside when it flashed, that’s why they sustained the majority of the injuries.”

From the article:

... “The workers were so severely hurt that they were unable to come up by themselves. Crews had to go down and rescue them.” ...