A severe chemical leak at an Ohio explosives plant led to the release of approximately 3,000 gallons of nitric acid, resulting in a toxic orange cloud and prompting widespread evacuations. The incident occurred at the Austin Powder Red Diamond Plant in McArthur, a facility that produces explosives for mining and construction purposes. The leak was first reported around 8:30 a.m. on Wednesday, according to a spokesperson for Vinton County.
The spillage from the plant’s 5,000-gallon tank led to the evacuation of nearby roads and the Village of Zaleski, a community of about 750 residents. A temporary shelter was established at Vinton County High School to accommodate the evacuees, as per the Vinton County Sheriff’s Office.
In response to the hazardous situation, the Federal Administration Authority imposed a temporary 30-nautical-mile flight restriction around the affected site, which was in effect until Thursday. This restriction, however, did not apply to relief flights.
Images of the incident depicted an ominous orange and brown haze against the clear morning sky. The Ohio EPA, which responded to the scene, reported that the leak has since been contained, but the cause remains under investigation.
Exposure to nitric acid can result in severe burns to the eyes, skin, and respiratory system, and can cause symptoms such as dizziness and drowsiness. The Centers for Disease Control and Prevention also note that chemical burns from nitric acid can cause the skin to turn yellow. Inhalation of the substance can lead to permanent damage to mucous membranes and lungs, potentially causing fluid buildup in the lungs and other respiratory issues.
Authorities advised anyone exposed to the toxic cloud to rinse their eyes with water, clean their skin, and seek medical attention if symptoms persist. As of now, no injuries have been reported.
The toxic plume is currently moving south of the facility due to increasing wind conditions in the area, as reported by Fox Weather. The lifting of evacuation orders will depend on wind patterns and air quality, according to emergency officials.