Authorities say a chemical leak at a West Virginia plant has killed two people and sent about 30 others to the hospital, including one person in serious condition.

Air monitoring stations in the vicinity of the violent chemical reaction at the Catalyst Refiners plant in Nitro on April 22, ...

Two workers were injured after a magnesium fire triggered an explosion at an Illinois chemical plant, prompting a hazmat response and shelter-in-place order.

A shelter-in-place order was issued after a chemical reaction released hydrogen sulfide, a toxic gas.