John MarsdenJohn Marsden is a professional engineer with twenty-eight years of broad, international experience in the design and management of major, innovative copper, gold, silver, molybdenum and cobalt operations and projects in the USA, Chile, Peru, Brazil, Mexico, South Africa, and the Congo (DRC). Most recently, Marsden was president of Freeport-McMoRan Copper & Gold Inc. and senior vice president of its predecessor company, Phelps Dodge Corporation. Prior to that, Marsden has held various operations and technical management positions during nine years with Consolidated Gold Fields PLC and eighteen years with Freeport-McMoRan Copper & Gold Inc. (formerly Phelps Dodge Corporation).

Marsden has been involved in the design, commissioning, operation and optimization of more than 40 mining operations and projects globally. He is the author of the book “The Chemistry of Gold Extraction”, with the first edition published in 1992 and the second edition published in 2006. He has authored 34 technical papers, has provided many keynote and plenary presentations around the world, and has 20 issued U.S. Patents (including a number of continuation patents).

Marsden is on the board of directors for Romarco Minerals Inc., the Institute for Mineral Resources at the University of Arizona, and a number of other university and industry advisory boards. He is a member of the National Academy of Engineering, the Society for Mining, Metallurgy & Exploration Inc. (SME), and the Minerals, Metals and Materials Society (TMS). Marsden is currently an active supporter of SME, and was on the board of Directors of SME from 2006 to 2009. He also served on the executive committee of AMIRA International from 2002 to 2008.

Marsden is enthusiastic about music and in a former life played with the Finishing Touches, the Wadges, and the Road Runners.

The Chemistry of Gold Extraction

The Chemistry of Gold Extraction on Amazon
The Chemistry of Gold Extraction on SME

2009 - Current President & Consultant, John O. Marsden LLC, dba Metallurgium
2007-2009 President, Freeport-McMoRan Mining Company, Freeport-McMoRan Copper & Gold, Inc.
Phelps Dodge Corporation
2003-2007 Senior Vice President – Technology & Development, Phelps Dodge Mining Company
2000-2003 Vice President – Technology & Development, Phelps Dodge Mining Company
1998-2000 Vice President – Technology, Phelps Dodge Mining Company
1995-1998 Manager - Concentrator Operations, Candelaria (Chile), Phelps Dodge Mining Company
1993-1995 Project Manager, McDonald Gold Project (Montana), Phelps Dodge Mining Company
1990-1993 Consulting Metallurgist - International Division, Phelps Dodge Mining Company
Consolidated Gold Fields PLC
1987-1990 Chief Metallurgist, Chimney Creek (Nevada), Gold Fields Mining Corporation
1986-1987 Plant Metallurgist, Chimney Creek (Nevada), Gold Fields Mining Corporation
1985-1986 Assistant Plant Superintendent, East Driefontein Gold Mine, Gold Fields of South Africa Ltd.
1984-1985 Plant Metallurgist, East Driefontein Gold Mine, Gold Fields of South Africa Ltd.
1982-1984 Graduate Metallurgist, Gold Fields Training Services (Pty), Gold Fields of South Africa Ltd.
1979 – 1982 BSc (Eng) Mineral Technology - 1st class honors
  Royal School of Mines, Imperial College, University of London
  Associateship of the Royal School of Mines
1989 – Current Registered Professional Engineer – Nevada (License No. 08263)
2010 Elected to National Academy of Engineering, Washington, D.C.
2009 SME Arthur F. Taggart Award (for best paper 2008)
2007 SME Milton E. Wadsworth Award (for copper concentrate leaching technology)
2007 SME Distinguished Member Award
2005 AIME Robert H. Richards Award (for contributions to operations, research & process development)
2005 SME Millman of the Year Award (SME Mineral Processing Division)
1992 SME Outstanding Young Engineer of the Year Award
1986 Mine Metallurgical Managers' Association of South Africa Silver Medal for best paper
1982 Warrington-Smythe Memorial Medal for best research project: "Precious Metals Recovery from Electronic Scrap"
1980 – 1982 Imperial College scholarship for outstanding academic performance
1978 – 1982 Consolidated Gold Fields PLC scholarship
2010 – Current Member, National Academy of Engineering (NAE)
1986 – Current Member, Society for Mining, Metallurgy & Exploration (SME/AIME)
1997 – Current Member, The Mining & Metallurgical Society of America (MMSA)
2001 – Current Member, The Minerals, Metals & Materials Society (TMS)
2009 – Current Romarco Minerals Inc. - Board of Directors
2008 - Current Mineral Information Institute - Board of Directors
2007 - Current Colorado School of Mines Visiting (Advisory) Committee
2006 - 2008 AMIRA International – Senior Vice Chairman
2006 - 2009 SME Board of Directors (New 9-member Board, established 2006)
2005 Chairman, Mineral Processing Division, SME/AIME
2004 - 2006 AMIRA International – Deputy Vice Chairman
2003 - Current Minerals & Metallurgical Processing Journal Editorial Board
2002 - 2008 AMIRA International Executive Committee
2002 - 2004 CSIRO Advisory Council
2002 - 2008 Montana Tech University Advisory Board
2001 - 2008 AMIRA Board of Directors
2001 - 2002 Chairman - Arizona Section, SME/AIME
2000 - 2006 SME/AIME Mineral Process Division Executive Committee
2000 - Current Univ. of Arizona, Geological and Mining Engineering Industrial Advisory Board
1999 - Current Randol International Advisory Board
1994 - 1999 Active member of various SME Committees
1993 - 1994 Chairman – SME/AIME Plant Design & Practice Committee
1993 - 1995 Montana Mining Association Board of Directors
1990 - 1993 SME Plant Design & Practice Committee