A chemical leak at a Vinton County explosives manufacturer on June 11 prompted evacuations and a no-fly order around the southeast Ohio plant. The leak produced a large plume of yellowish gas.

A nitric acid leak at a chemical plant in Vinton County, Ohio, prompted emergency evacuations on Wednesday, June 11, according to officials. (Credit: Edeth Conner via Storyful) ...

J.J. Smith with Smith's Bell and Clock Service communicates with Nathan Mitchell as they hoist supplies up to the clock tower at the Benton County Courthouse in Vinton on Aug. 4, 2015.

MCARTHUR, Ohio (WCMH) — A chemical leak from an explosives manufacturing plant prompted evacuations Wednesday in and around Zaleski in Vinton County, according to the sheriff’s office. Creek ...

VINTON COUNTY, Ohio (WCHS) — UPDATED - 5:00 p.m., 6/11/25 Some residents in Vinton County, Ohio can return home after evacuation orders were lifted Wednesday afternoon following a chemical leak.

Vinton County is the least populous county in Ohio, with only 12,800 residents recorded in the 2020 census. Its County seat is McArthur, near the Austin Powder Red Diamond plant.

More: Chemical leak at Vinton County plant prompted evacuation: What we know Temporary flight restrictions also were put in place for a 30-nautical-mile radius around the plant.