I helped put Burns Harbor together and spent a couple of years at East Chicago and Gary. Most of what I did was ancilliary stuff like Driox, Booster compressors and pipeline metering stations.
I remember babysitting the Broadway street booster station in Gary during the winter. It had a small steam heater that was fed with 100# steam. One minute you froze, the next you roasted.
How about the 39,000 hp Brown Bovari air compressors at BH that could only be started on Sunday night and had a jacking system that always kept the main shaft rotating always.
East Chicago was a specialty gas plant. It produced lots of different gasses. The Linde star saphire plant was across the street.
The combined output of all 3 sites was about 11,000 tons/day of distilled air products when I was there in the 70's. That's 22,000,000 lbs/day, with Xenon occupying 0.1ppm of the atmosphere, you'll get about 2 lbs of xenon/day. Krypton is 10x more prevalent so you'll collect 20lbs/day. I don't know if all of the plants are equipped with Krypton/Xenon extraction capabilities, I know East Chicago is for sure.