Pennsylvania Gov. Josh Shapiro spoke with officials and provided an update on the U.S. Steel Clairton Coke Works explosion in Allegheny County. Click the video player above to watch the full conference.

Authorities said 10 other workers required hospital treatment — including five listed in critical but stable condition — after an explosion Monday morning at the U.S. Steel Clairton Coke Works. The cause of the blast has not been determined.

In September 2009, a maintenance worker was killed in an explosion. 2. In July 2010, an explosion injured 14 employees and six contractors. Afterward, the Occupational Safety a