The fine is for violations at the Clairton Coke Works for the second quarter of 2022. That is in addition to more than $458,000 in fines for the first quarter.
U.S. Steel will begin closing three of its 10 remaining coke batteries at its Clairton plant later this month. It is expected to cut emissions by 15 to 20 percent.
Workers brought in to clear and rebuild the tracks after the derailment are now complaining of health problems similar to those experienced by residents of East Palestine.
Carnegie Mellon and Texas A&M researchers found high levels of acrolein, a chemical found in manufacturing and formed in combustion. It is considered a hazardous air pollutant.
