A nitric acid plant in a rural corner of Greene County, Tennessee has leaked chemicals into the air and water several times in the last decade. Now US Nitrogen is under investigation by a federal ...

CSB Chairperson Steve Owens said in a statement, “We are concerned that incidents involving nitric acid have occurred at two facilities owned by Austin Powder in less than seven months.

According to state officials, the release occurred after “an unknown contaminant” entered a 5,000-gallon tank containing nitric acid and purportedly caused a chemical reaction that released ...

Austin Powder released a statement shortly after the gas release, blaming it on a “malfunction” during the start-up of the nitric acid plant.