Kitchener (ON) dispatch received multiple calls for shipping containers on fire at the rear of Sci-lab Material Testing at Beasley and Trillium Drive November 22. Pump 6 reported they had a black thermal column from a few blocks away. The initial report was the trailer on fire contained dust, and a second trailer contained diesel fuel. P6 firefighters pulled a 1.5” line to attack the fully involved trailer. The fire was knocked down in a couple of minutes. All shots taken approximately 10 minutes after the fire was knocked down. Box 690 provided rehab.