 Had gone to lunch, came back from lunch, went in and ate, came back, I heard a boom, came back out and just happened to look over and I saw billowing smoke. I've never seen that. I've been here for 20-something years working here. I've never seen anything that close. The cause of the fire is under investigation by the Iredale County Fire Marshal. WBT's Erica Lunsford reporting from the scene. News Talk 1110 and 99.3 WBT checking traffic. Here's Pam Warner.