Steel factory explosion investigation underway

Tonight, devastating damage seen from above after this massive explosion at a US steel plant as investigators work to find the cause. We're not going to speculate. We're going to let the people do their work and support them and that important job.Officials say there were no warnings that indicated any problems at the factory. Routine maintenance is is what they were preparing for. Uh I think it was actually going to happen next week.Andrew Macy has worked at the Claritton Steel Plant for 44 years. There wa ...