The explosion happened at a OneH2, Inc. Hydrogen Fuel facility in Long View. A wall at the plant appeared to be blown out, according to WSOC.
Police and firefighters responded to the plant Tuesday just after 8 a.m. Several people told WSOC the explosion was so intense, rumbles were felt across parts of Hickory and Caldwell County. Nearby homes were damaged, as some had windows destroyed.
Forty-four employees were in the building at the time. No one was injured. Long View is just west of Hickory.
The cause of the explosion is under investigation.