1. H. Bessemer: U.K. Patent 16,082, issued 1856.
2. Sir Henry Bessemer: FRS, “An Autobiography,” Office of “Engineering,” London, 1905.
3. F. W. Davis: U.S. Bureau of Mines, R.I. 2502, 1923.
4. J. R. Gordon, G. H. Norman, P. E. Queneau, W. K. Sproule, C. E. Young: U.S. Patent 2,668,107, issued 1954.
5. INCO Staff:The Oxygen Flash Smelting Process of the International Nickel Company, pp. 292-300, CIMM Bulletin, May, 1955.