Dive summary:

• Trash, including chemicals, picked up from an industrial park created a dangerous concoction when mixed with water inside the garbage truck, creating an explosion and large flames.
• This was not the first time the back of the drivers truck has caught on fire so the driver knew how to dump the load so no damage was done.
• Firefighters were called and were able to extinguish the fire fairly quickly.
   

From the article:

With high winds and rain from the remnants of Superstorm Sandy pounding western Pennsylvania, it was a trash fire that had Kirwan Heights firefighters on alert late Monday night.

A garbage truck picked up a load of trash at the Kirwan Heights Industrial Park shortly after 11 p.m. when the driver said he heard an explosion and saw flames coming from the rear of the vehicle. He found an open gravel lot and dumped the load into a pile of flaming trash. ...