Hi all,
I'm new here, but joined specifically because of this thread. I work at an office out by the United Center, and I snapped these two pictures back on June 5th. They show an older Norfolk Southern, I believe, locomotive pulling 12 or so mixed hopper cars. There's some Burlington Northern, BNSF, and Union Pacific cars. The train was heading inbound, and although I've been working here for 6 months, this was the first freight train I've seen on it. There's mostly Metra, a fair amount of Amtrack, and now this freight train. I can't say for sure if it was headed to Blommers, but 1. That's a lot of cars for them, but 2. I don't know where else it'd be headed if not Blommers.
As for GM's comment, that business is Elston Materials LLC. On Google Maps, you can see a tail that used to lead into the business, but right now it's blocked by a ton, literally, of bricks on pallets and the track leading to it looks in terrible condition.