LAW AND ORDER Date: April 16, 2000 Publication: The Atlanta Journal and The Atlanta Constitution Page Number: D8 Word Count: 649 Gilmer County tank explosion kills 2 An explosion at an asphalt plant in Gilmer County Saturday killed two men who were working on a metal tank, authorities said. The victims were identified as David C. Totten, 47, of Blairsville and Leonard Gene Carter, 46, of Haynesville, N.C. The explosion occurred at 11:45 a.m. at the Colwell Asphalt plant off Ga. 15 between Ellijay and Blue Ridge. The men were making repairs on a tank that holds tar when it exploded, said Margie Buchanan,