CLARK COUNTY, Wis. (WEAU) — The Clark County Sheriff’s Department says 19 cars derailed off of tracks between Merrillan and Hatfield around six o’clock 3/16/13. The train was carrying sand and at least one car spilled tons of it on Highway K. Deputies say there was one operator on the train. A cause has not yet been determined. Clark County Emergency Management says it’s working with Canadian National Railways on the investigation. The Emergency Management Director, John Ross says the clean-up will continue with road closure for a lengthy period of time. “The big challenge will be, you’ll have a lot of heavy equipment involved, you’ll have cleanup of the cars, you may have to empty some of the cars, to move them upright. It’s definitely not a typical accident scene,” said Ross. County road ‘K’ in Clark County is now closed in that area. Drivers are asked to take alternate routes.