...r they rifle the smooth bores, and also rifle cannon. The Tredegar Iron Works, at Richmond, are said to turn out tight small and four large rifled cannon daily. There are also cannon foundries at Atlanta, Ga. , the iron being procured from Dalton, near by; two on the Cumberland river, right in the midst of the iron country; two at Memphis, and one at New Orleans. Powder is manufactured at Little Rock, Ar...