Dr. Terry I. Mudder is co-owner with Dr. Karen Hagelstein of Times Limited, an environmental science and engineering consulting firm located in Sheridan, Wyoming (USA). Dr. Mudder was formally a partner, office manager and corporate consultant in the Seattle, Washington office of SRK Consulting, an international mining consulting firm. Prior to consulting, he served as Chief Environmental Engineer and Chief Research Chemist at the Homestake Mine in Lead, South Dakota, where he developed a full-scale process for the microbial degradation of cyanide in process wastewater. The full-scale process which operated for twenty years before closure of the mine was featured in a biotechnology feature article in National Geographic.

Dr. Mudder holds a B.S. and M.S. in organic and analytical chemistry and a Ph.D. in environmental science and engineering from the University of Iowa. He has over twenty-five years experience in the investigation of the chemistry, analysis, fate, aquatic toxicity, and disposal of solid and liquid mine wastes containing metals and cyanide. He has served as adjunct professor, graduate student and thesis advisor, and quest lecturer at several colleges and universities in Australia, Canada, and the United States in the departments of biology, chemistry, environmental engineering, geology, soil science and reclamation, mineral processing, and metallurgy. Dr. Mudder received the prestigious Guy March Medal from his Alma Mata, the South Dakota School of Mines and Technology, as an outstanding alumnus.

He has worked on over 200 new and existing mining and industrial projects on six continents in two dozen countries worldwide. Clients have included aboriginal and native peoples, citizen groups, mining companies, non-governmental organizations, and regulatory agencies. He has also served on several technical review and corporate audit teams assessing comprehensive mine remediation and closure strategies, as well as the cyanide and environmental management practices at numerous operating and abandoned mine sites. With respect to mine site closure and remediation, Dr. Mudder has been involved in the areas of water management, active and passive water treatment, development of site-specific water quality criteria and effluent guidelines, staged or paced discharge strategies, heap leach pad detoxification, risk assessments, and reprocessing and recycling activities.

Dr. Mudder has considerable experience in the public forum, including testimony at hearings, lectures to non-governmental organizations, invited and sponsored keynote addresses at workshops and symposia, technical presentations at professional meetings, and as an expert witness and technical advisor in civil and criminal legal proceedings. He has written over eighty papers and given numerous technical presentations and lectures. He has been involved with many short courses and workshops on cyanide, acid mine drainage, and mine closure held in Australia, Peru, and the United States. He has co-authored over fifteen manuals, pamphlets, and books, including The Chemistry and Treatment of Cyanidation Wastes, The Cyanide Monograph, and the new CD entitled the Cyanide Compendium, all published by Mining Journal Books.

He has been instrumental in the development and application of many chemical, physical, and biological treatment processes for cyanide, metals and other constituents, for which he has received both national and international awards, including the prestigious Philip Morgan Medal of the Water Environment Federation. He has also obtained several worldwide patents for these processes as well. These processes include the original biological treatment process developed for Homestake Mining Company, the Cyanisorb Process for cyanide recovery from metallurgical circuits, and the Biopass System for passive in-situ treatment of spent heap leach pad solutions, waste rock drainage, and tailings impoundment seepage.

He has been the member of many national and international scientific organizations and associated professional committees including the American Chemical Society (ACS), Standard Methods for the Examination of Water and Wastewater, the American Water Works Association, the Water Environment Federation, and the American Society for Testing of Materials. He has been involved as a reviewer of manuscripts submitted for publication in professional journals including The AIME/SME Mining Journal and the ACS publication Environmental Science and Technology. He is a frequent editorial contributor and Technical Advisor for Mining Environmental Management and is on the Honorary Editorial Board of the new Journal of European Mineral Processing and Environmental Protection. He also co-created and maintains the internationally recognized Internet website for cyanide information located at www.cyantists.com.

Dr. Mudder created and co-sponsored the Dr. Adrian Smith International Award given to outstanding individuals for lifetime achievement in the area of environmental management and stewardship in the mining industry. He has provided expert advice to the International Council on Metals and the Environment (presently ICMM), The Gold and Silver Institutes, and International Cyanide Management Institute. He has been a technical advisor and consultant not only to industry but also the British Columbia Ministry of Environment, Indian Northern Affairs Canada, Environment Australia, the Peruvian Environmental Protection Service, the USEPA, the United States Forest Service, various state and provincial agencies, the United Nations Environmental Program (UNEP) and the World Bank/IFC mining group on issues related to cyanide and environmental management. More recently, Dr. Mudder has been working as a special consultant to the Canadian government participating on peer review panels providing advice on closure of abandoned mines on Native Lands in the Far North.

Contact Information:
Terry I. Mudder, Ph. D.
Managing Director
TIMES Limited
1604 Leopard Street
Sheridan, Wyoming 82801 USA

Tel: + 307 674 4844
Fax: + 307 674 4843
E-mail: cyunara@aol.com
Website: www.cyantists.com