Napa, Calif. -- Police and safety officials are investigating an accident that claimed the life of a roadway laborer who died when he was run over by a street roller. Christopher Meeks, of Escalon, was helping resurface a Napa road when a 10-wheel Caterpillar street roller ran over him Saturday morning. Fellow workers called 911 as Meeks lay injured beneath the tractor. He was rushed to a local hospital with major head and upper body injuries and was pronounced dead a short time later.