Pumping some calcium chloride down a gas well in the area around FT.Stockton TX.
Had that Mack wound up pumping against a head of pressure when the well head steel ring gave up.gas was everywhere and even hitting the stop,it just kept running.

I last looked at the truck from about 30 ft.away when it went to pieces.
Seems that their monitor was found to be defective.
It cost the pulling rig an engine as well.