The explosion, followed by several smaller blasts, could be felt in the nearby community and prompted county officials to warn residents to stay away from the scene so emergency workers could respond.

A day after a deadly explosion rocked the Clairton Coke Works facility, Allegheny County officials confirmed that two men were killed and five others remain hospitalized in critical but stable condition as authorities continue to investigate the incident alongside federal and local partners.

Workers were pushing coke out of huge ovens and preparing for maintenance when an explosion rocked a U.S. Steel plant outside Pittsburgh, a company executive said Tuesday, a day after the blast killed two workers.