Before revision: Elswick Shot Tower Elswick, Tyne and Wear United Kingdom 1797 157 feet high.Sales by Auction, The Public Ledger, July 19, 1884, p. 2 In use until 1951, demolished in January 1969.Tower collapses before schedule, Newcastle Journal, January 23, 1969, p. 8 Helena Shot Tower Spring Green, Wisconsin United States 1831
After revision: 180' shaft hand dug from solid rock bluff and topped with wooden tower.Elswick Shot Tower Elswick, Tyne and Wear United Kingdom 1797 157 feet high.Sales by Auction, The Public Ledger, July 19, 1884, p. 2 In use until 1951, demolished in January 1969.Tower collapses before schedule, Newcastle Journal, January 23, 1969, p. 8 Helena Shot Tower Spring Green, Wisconsin United States 1831