A time-lapse from the Breathe Project captured an explosion at the U.S. Steel Clairton Coke Works plant in Pennsylvania.

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Dozens of people have been reportedly injured following the explosion at the U.S. Steel plant Monday afternoon. At least one person has been killed, and two others remain unaccounted for.

The time-lapse shows black smoke billowing into the air at a portion of the plant. While the timelapse does not have sound, a construction worker who was near the scene told sister station WTAE in Pittsburgh that it sounded like thunder and shook his chest.

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