A fire that raged for more than seven hours overnight destroyed a former lumber yard in Taunton. Firefighter Jeff Gallagher said that the building at on Hart Street was vacant and that there were no injuries. Firefighters arrived just after 11 p.m. Friday and cleared the scene at 6:30 a.m. yesterday, Gallagher said. Fire units from at least seven communities responded to the former site of Mozzone Lumber. The cause is being investigated.