when the vehicles collided the sodium chlorate, mixed with full, exploded and then ignited a come busible chemical in a nearby train car. hazardous materials safety crews determined the chemicals are not toxic when inhaled and declare the area safe by approximately 9:00 p.m. that night. the truck driver is identified as john alban, jr., owner of a waste removal company. he's seriously injured in the crash. he's treated at a local hospital and later released. attempts to reach alban for his comment were unsuccessful. two workers on board the train, an engineer and the conductor, are uninjured. ntsb investigators say the conductor gave three horn blasts as the train neared the crossing. the ntsb's report states in part that the access road is marked only with cross buck signs and nonstandard stop signs, and there are no active warning lights or crossing gates in place. eyewitnesses are still stunned by what they saw. >> about two weeks, that's all we were talking about was the explosion. i'm going, i'll always remember this. like never gonna forget this moment. [ explosion ] >> back up. >>