A fiery explosion early Wednesday at Hercules in one of the largest rocket fuel mixing buildings in the aerospace industry is being investigated by Hercules officials.

No one was hurt in the explosion at Building No. 2 at the Bacchus West plant just before 1:30 a.m. "There was both an explosion and a fire during mixing operations," Olsen said. "There was nobody in the building."Plant Manager Ruth Novak said in a written statement that Hercules is assessing the situation and that everything at the plant is under control.