U.S. Nitrogen shuts down nitric acid plant Tuesday after ammonia 'detected' off site

GREENEVILLE, Tenn. (WJHL) — Greene County factory U.S. Nitrogen, which produces nitric acid, ammonium nitrate and other components for Austin Powder's explosives plants in other locations, is partially closed after an ammonia-related incident at its nitric acid plant Tuesday morning. A U.S. Nitrogen press release states that 911 officials alerted the company early Tuesday morning [...]