Officials said a preliminary investigation found the explosion happened when an employee noticed a container leaking with chemicals and tried to use a forklift to lift the container, after which there was an ignition. Officials in San Jacinto County said the explosion took place at Sound Resource Solutions, a company that recycles and repackages various chemicals. Shepherd is a mainly rural area about 60 miles (100 kilometers) northeast of Houston. HOUSTON (AP) - A massive fire at a chemical plant in rural Texas on Wednesday sent a plume of black smoke into the sky as officials closed down a local highway and ordered residents to take shelter for several hours.Īuthorities had asked residents within a one-mile radius of a chemical plant fire in Shepherd as well as those in surrounding communities to shelter in place for about five hours on Wednesday and lifted the order early Wednesday afternoon.