CLARKSTON, Wash. (AP) — A construction crew uncovered what appears to be the bone of a Columbian mammoth at a site near Clarkston. KXLY reports  the bone was uncovered last week and University of Idaho anthropologist Lee Sappington visited the site Tuesday with grad students looking for larger bones or tusks. Sappington says the bone appears to be part of the front leg of the ancient elephant-like animal. Columbian mammoth bones have been found across Washington and it's the official state fossil. On Feb. 12 a tusk was uncovered at a construction site in Seattle's South Lake Union area.