Overview

• Rescue crews have confirmed one fatality, treated about ten injured workers and continue searching for a person unaccounted for.
• Authorities declared a Level 3 mass-casualty incident that mobilized regional emergency teams and specialized resources.
• Officials say the exact cause remains unknown with investigations centered on the coke-oven reversing room where the explosions began.
• The Allegheny County Health Department advised residents within a one-mile radius to shelter in place despite air-quality readings below federal limits.
• Clairton Coke Works is North America’s largest coking operation and has faced prior safety incidents and pollution litigation.