Fire triggers pollution concerns at US Steel coke plant Monday | Advertiser-Tribune By The Associated Press The second fire in six months at U.S. Steel's massive coke plant outside Pittsburgh knocked a key pollution control system offline Monday, triggering a health warning as officials monitored the air around the plant for signs of a release of toxic sulfur dioxide. The Allegheny County Health Department threatened to shut […]

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Fire triggers pollution concerns at US Steel coke plant Monday