One person was injured in an accident that shut down the westbound lane of I-70 west of Emma on Wednesday.  The Highway Patrol reports Toi Nash, 34, of Kansas City, was operating a MoDOT paint crew truck when the vehicle was struck from behind by a semi driven by Graylyn Zito, 59, of Quinlan, Texas, causing the paint crew truck to overturn and the semi to jacknife, blocking both lanes of of traffic.  Nash was tranported to I-70 medical center with minor injuries.  The Highway Patrol is continuing the investigation and charges are pending.