An Industrial Incident At A Local Ammunition Plant Has Prompted A State Environmental Investigation. Bae Systems Informed The Tennessee Department Of Environment And Conservation About A Discharge At Holston Army Ammunition Plant Last Week. The Incident Was Triggered By A Faulty Device Designed To Release Water In Case Of A High Heat Event. About 16,000 Gallons Of Water Was Released In The Deluge. An Independent Investigation Found Small Amounts Of Energetic Materials Including Rdx And Hmx Explosives Contaminated The Water. The Materials Were Described As Virtually Indistinguishable And Relatively Insoluble In Water.