Somewhere in remote Nebraska was the Cornhusker Army Ammunition Plant, where they made munitions from 1942 through 1973. When there was war, the plant was activated; when there was peace, it was put on standby. In 1989, not having been activated since 1973 and Vietnam, the Army decided it didn't need the plant any longer.
While it was active, the plant attempted to manage its waste properly by building a complicated filtering system. But it must not have worked. At this point, the plant has contaminated ground water in wells up to 4 miles away. The main pollutant: TNT.
So how do you get rid of a plant contaminated with explosive dust? Simple, you BURN it. And that's what they're doing in the above shot.
The more you know. It turns out that the United States military is the #1 domestic polluter and produces more hazardous waste annually than the five largest international chemical companies combined.