Explosion of Powder Mills.
--The Union Powder Mills at New Durham, N. H., which exploded on Tuesday, were twelve in number, located about twenty rods apart, forming a circle. The buildings were all cheap wooden structures. The first explosion was in the drying-mill. That building was blown into atoms, and three buildings were set on fire, exploding soon after. One of these was used as a magazine, and contained four tons of powder. Windows were shattered in all the buildings in the vicinity of the mills. There were seven men employed in these four buildings at the time. Three were blown to pieces, and two others so much injured as to live but a short time. One man had his face badly burned. The loss has been estimated at $10,000 to $15,000.
