This is from a $250 million U.S. Army Corp project in East Chicago that I oversaw for a short period of time on behalf of the local community. Those are hundreds of petroleum pipes siting underground at the site of a defunct oil refinery. In an attempt to contain some of the underground contamination from spreading, these men are tasked to cut the pipes out to make room for a slurry wall of clay. The wall will go down below the the water table and tie into clay. Notice the fire extinguisher? - I really don’t think it help in the event they spark any product left in those pipes.  

Thomas East Chicago