Three 11,000-volt power transformers atop a downtown skyscraper traded sparks Friday, seriously injuring a utility company worker and igniting a fire that forced office workers onto the streets, officials said.
The injured Duquesne Light Co. worker, David Barnett, 56, suffered second- and third-degree burns to his face, head, chest, right arm and back. His life is not threatened, a hospital spokeswoman said.
A second utility worker and two firefighters were slightly injured in the accident at One Oliver Plaza.
Firefighters had to wait for two hours on the 36th floor of the 38-story building while utility company workers shut off power to the transformers.