Pennsylvania US Steel plant explosion traps people under rubble
1. An explosion occurred at U.S. Steel's Clairton Coke Works in Pennsylvania. 2. Emergency services reported multiple injuries but no fatalities confirmed yet. 3. The facility is the largest coking operation in North America and critical to U.S. Steel. 4. State officials are monitoring the situation and offered assistance. 5. At least five individuals were transported to hospitals following the incident.