The Ontario Fire Marshal is investigating a fire at a metal recycling plant in Waterdown.
Crews were called to the building on Middletown Rd. near Concession 4 West around 8 p.m. Wednesday night.
Additional crews had to be called in.
Fire officials say there were over 20 fire apparatus, including eight tankers providing a water supply.
Firefighters were on scene into the night and Thursday morning to extinguish hot spots.
Heavy machinery is on site to remove collapsed portions of the building.
The Ministry of the Environment has been notified.
The damage is estimated to be around $1.2 million.
@HamiltonFireDep crews are attending a large fire at a recycling facility at 624 Middletown Rd. Over 20 pieces of apparatus on scene. One large building well involved with exposures present. Crews will be working for some time. pic.twitter.com/4wuw0ec4J9
— Hamilton Fire Dept (@HamiltonFireDep) July 23, 2020