Yep, here's a conservative estimate on what it would do:

According to a report by Public Source, if that 17% reduction in coke production leads to a 17% improvement in emissions, it would make the pollution levels in the Mon Valley more in line with neighborhoods like Lawrenceville and better than the air quality in North Braddock, Wilkinsburg, and Neville Island.

https://nextpittsburgh.com/latest-news/u-s-steel-closing-the-three-most-polluting-batteries-at-clairton-coke-works/