John O. Marsden is president of Metallurgium (and John O. Marsden LLC) offering consulting services to the metals and minerals extraction industry worldwide. Metallurgium was established in 2009 and is based in Phoenix, Arizona, USA.

Metallurgium specializes in the following areas:

• Copper, gold, silver, molybdenum, and cobalt extraction technology


• Corporate growth and development strategy


• Project development and project management


• Technology development and implementation


• Process development and optimization


• Metallurgical and mineral processing plant design


• Project due diligence


• Peer review

In executing the above, Metallurgium routinely provides project and operations audits and reviews, and acts as a senior corporate advisor on high level issues related to project and technology development. In some cases, workshops, strategic planning, training, education and mentoring are provided. In all cases, emphasis is placed on the effective communication of opinions and findings in a clear and concise format.