Nitric Acid Spill
A large chemical spill in Ohio grounded all flights within 4,000 square miles and sparked mass evacuations when thousands of gallons of nitric acid leaked from a tank at the Austin Powder Red Diamond plant in McArthur.
The company produces industrial explosives used for construction and mining. At the time of reporting, it was unclear how the leak started, but thick orange plumes of smoke were seen billowing across tha area.
The local town of Zaleski, population around 750 people, was evacuated by Sherriff's deputies as a precaution.