1. D.A. Temple, “Zinc—From Mine to Market, Some Views on the Industry,” Zinc ’85, ed. K. Tozawa (Tokyo: Min. Metal. Inst. Japan, 1985), pp. 3–29.
2. V. Arregui, A.R. Gordon and G. Steintveit, “The Jarosite Process—Past, Present and Future,” Lead-Zinc-Tin ’80, ed. J.M. Cigan, T.S. Mackey and T.J. O’Keefe (Warrendale, PA: TMS, 1979), pp. 97–123.
3. J.E. Dutrizac, “The Physical Chemistry of Iron Precipitation in the Zinc Industry,” Lead-Zinc-Tin ’80, ed. J.M. Cigan, T.S. Mackey and T.J. O’Keefe (Warrendale, PA: TMS, 1979), pp. 532–564.
4. D. Collier et al., “The Versatic Acid Process—A Solution to the Iron Problem irt the Zinc Industry?” Iron Control in Hydrometallurgy, ed. J.E. Dutrizac and A.J. Monhemius (Chichester: Ellis Horwood, 1986), pp. 295–311.
5. Anon., Norzink AS Annual Report (Oslo: Norzink AS, 1986).