1. S.D. Atchison, “Copper’s Hope for Climbing Out of the Pits,” Business Week, March 10, 1986, p. 86H.
2. D. Ellingson, “Phelps Dodge Has Something to Smile About,” E&MJ, August 1987, pp. 24–32.
3. J.P. Hicks, “New Life for Copper Industry,” New York Times, November 14, 1987, p. 17.
4. K. Sutill, “Australian Gold: Western Australia Leads the Rush,” E&MJ, November 1987, pp. 26–28.
5. G.O. Argall, Jr., “The New California Gold Rush,” E&MJ, December 1987, pp. 30–37.