My understanding of the situation is that most of the documentation on manufacturing fogbank was destroyed to evade litigation by workers poisoned by acetonitri

My understanding of the situation is that most of the documentation on manufacturing fogbank was destroyed to evade litigation by workers poisoned by acetonitrile (which your body metabolizes into hydrogen cyanide) which was used in the manufacture of the substance. One should remember that not long prior to the shutdown of the facility making fogbank, the Rocky Flats facility (which made plutonium bits for nuclear weapons) was the first nuclear facility raided by the FBI and EPA for environmental violations (among them was burning plu contaminated waste in open barrels and losing track of hundreds of pounds of plu).