West Virginia chemical leak deaths

A chemical reaction is believed to have created a cloud of deadly hydrogen sulfide gas, which overwhelmed workers at the site.

One person remains in serious condition, while dozens of others were treated for respiratory issues and chemical exposure.

Local authorities ordered emergency evacuations for nearby homes as a precaution while specialized teams worked to contain the leak.

The incident has prompted a federal investigation into safety protocols at the facility, which was in the final stages of decommissioning.