About 600 gallons of the highly corrosive acid was released from a rail car on the arsenal grounds. Workers at the military munitions plant were told to shelter in place for a time.

Hazelwood crews respond to 4,500-gallon nitric acid spill in parking lot. No injuries reported and cleanup expected to take several hours.

A hazmat incident has forced the closure of a part of the James S. McDonnell Boulevard in Hazelwood Friday morning.

A truck carrying thousands of gallons of nitric acid spilled the chemical Friday morning in north St. Louis County.

Thousands of gallons of nitric acid were spilled Friday morning in north St. Louis County.

A tanker carrying nitric acid has overturned outside Wellington, and heavy rain is hampering recovery efforts. Cape Winelands District Municipality spokesperson Jo-Anne Otto said fire services ...

According to the CSB, the nitric acid release took place at the facility in Greene County, owned by Austin Powder Company, on Nov. 24, 2024.

Austin Powder CEO John Rathbun issued a statement to residents in Vinton County after some were evacuated last week because of a chemical leak.

Nitric acid leak at Ohio explosives plant forces evacuations, flight ban, and emergency response across Vinton County.

According to the Ohio Environmental Protection Agency, the leak occurred after "an unknown contaminant" entered a 5,000-gallon tank containing nitric acid, creating a chemical reaction that ...

Parts of Vinton County in southeastern Ohio were evacuated Wednesday following a chemical leak. A gas release at the Austin Powder chemical plant about 30 minutes west of Athens has been stopped ...