HANOVER, Pennsylvania — A central Pennsylvania chemical company says preliminary information shows an electrical circuit malfunction likely caused a massive manufacturing plant fire that burned for more than 12 hours.
Miller Chemical and Fertilizer said Monday it's also installed a large above-ground tank to contain runoff and prevent water from entering Slagle Run and Conewago Creek.
Last week, officials said thousands of dead fish had been seen over a 10- to 15-mile span of the creek after the June 8 fire in Conewago, Adams County.
State environmental officials are monitoring Conewago Creek for contaminants. Miller Chemical says the creek's oxygen levels have improved.
Miller Chemical says it manufactures nonhazardous crop protection and nutritional agrochemicals.
No one was hurt in the fire. The state fire marshal is still investigating.