Cyprus Amax Minerals

Cyprus Amax Minerals was a major US-based mining company formed in 1993 through the merger of AMAX with the Cyprus Minerals Company. It was one of the world's largest producers of Molybdenum and Lithium and was a leading producer of copper and coal. It also produced iron ore and gold. It was acquired by the Phelps Dodge Corporation in 1999.

Cyprus Amax Minerals Company
Formerly listed on NYSE
Industrynonferrous metals
FateMerged with Phelps Dodge
PredecessorCyprus Mines Corporation
SuccessorCyprus Amax Minerals
Founded1916
FounderSeeley W. Mudd
Defunct1999

Background

In 1979 Cyprus Mines Corporation was acquired by Amoco Corporation. Amoco expanded Cyprus into a diversified worldwide mining company. Amoco spun off Cyprus Minerals Company in 1985.[1]

In 1986, Cyprus acquired the Sierrita copper and molybdenum mine near Tucson, Arizona.

In July 1988, Cyprus Minerals bought the Inspiration mine and smelting complex in Miami, Arizona.[2] With the expiry of an agreement to purchase electricity at a favorable rate from the Salt River Project, Cyprus Minerals installed an ISASMELT furnace in its copper smelter.[3] This was the first large-scale installation of the ISASMELT process, which was developed jointly by Mount Isa Mines Limited and the Australian government's Commonwealth Scientific and Industrial Research Organisation ("CSIRO").[4]

AMAX Inc. (formerly the American Metal Company) was a mining company based in New York with interests in coal and gold. It was the result of the merger, in 1957, between the long-established American Metal Company and the Climax Molybdenum Company.[5]

Merger

In 1993, AMAX Inc. merged with the Cyprus Minerals Company to form Cyprus Amax Minerals Company. The merged entity was the world's leading producer of molybdenum and lithium, and a leading producer of copper and coal. The company had operations in 24 states and on six continents.

Acquisition and Later History

In late 1999, Cyprus Amax Minerals was acquired by Phelps Dodge Corporation, which in turn was acquired by Freeport-McMoRan (NYSE: FCX) in 2007, forming the world's largest copper producer.[6][7]

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References
  1. "Company History: Cyprus Amax Minerals Company". Funding Universe. Retrieved 2007-06-22.
  2. G W LaChapelle and J S Dyas, "Cyprus Miami property overview and mine modernization," Mining Engineering, 45(4), April 1993, 344–346.
  3. R R Bhappu, K H Larson and R D Tunis, ‘Cyprus Miami Mining Corporation – smelter modernization project summary and status,’ in: EPD Congress 1994, Ed. G Warren (The Minerals, Metals and Materials Society: Warrendale, Pennsylvania, 1993), 555–570.
  4. P S Arthur and S P Hunt, ‘ISASMELT – 25 years of continuous evolution,’ in: The John Floyd International Symposium on Sustainable Developments in Metals Processing, Melbourne, 3–6 July 2005, Eds. M Nilmani and W J Rankin (NCS Associates (Australia) Pty Ltd, 2005), 73–94.
  5. "Conservationist Harold K. Hochschild, the former head of a large metals company and an active Adirondacks historian and conservationist, died Friday". The New York Times. 25 January 1981. Retrieved 27 January 2020.
  6. "Cyprus Amax Minerals Company: Private Company Information - Bloomberg". www.bloomberg.com. Retrieved 29 August 2017.
  7. "History of Cyprus Amax Minerals Company – FundingUniverse". www.fundinguniverse.com. Retrieved 29 August 2017.

Further reading
  • International Directory of Company Histories, Vol. 21. St. James Press, 1998.
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