An accident Tuesday afternoon in Saline County killed a pair of Columbia residents and injured two others. Randall Wells, 31, was westbound on I-70, about five miles west of the Marshall junction, when he traveled through the median cables and hit an eastbound tractor-trailer driven by Roland Mask, 31, of St. Louis, according to the Missouri State Highway Patrol’s crash report. Two passengers in the Wells vehicle, Terron Davis, 26, and Andre Edwards, 25, both of Columbia, were ejected and later died at the scene. Wells and a third passenger, Brandon West, 29, were taken to University Hospital where they are listed in critical condition. The crash was reported shortly after 3:00 p.m.