The #11 motor was pulling the track duster to the James Creek Section while being followed by the #10 motor. The #11 motor ""saddle bagged"" in a dip and was struck by the #11 motor. The employee that was riding as a passenger in the #10 motor was diagnosed with a lumbar strain and contusion to the left knee. Medical diagnosis was not received at the mine site until 8-20-2009.