Excavation has begun expanding the Snap-on Tools toolmaking facility in Elizabethton. The expansion plans were approved by the Elizabethton Planning Commission in January. The site plan approved at the time called for a 25,350-foot addition to the factory at 2195 State Line Road.The plan also called for a reconfigured parking lot, because the building would expand into a portion of the existing parking lot. The January plans that were approved included a parking lot with 140 spaces, resulting in an additional 59 spaces.