Acsys Technologies was a auto plant in Oshawa, Ontario, Canada. It closed down around the turn of the century. Some parts of the plant were 100 years old, and it was part of the original GM Auto plant. The plant was 2,000,000 square feet, in 46 acres. When I went there the plant still had active security, and it was a wild few hours exploring the place. Sadly I lost most of my photos from it.
The only photo I still have was this one:
You can find the UER location listed here: https://www.uer.ca/locations/show.asp?locid=22565