Dr. Karlheinz Spitz is an environmental consultant with more than 20 years professional experience in Canada, Europe, Asia, and Australia. His main interest is the environmental assessment of large resource development projects in developing countries. He worked on many mines in South East Asia, covering a wide range of minerals and a diverse spectrum of environmental and social settings. Dr. Spitz understands mining as a sustainable economic activity; his focus is on the social, economic and environmental performance of mining. Dr. Spitz provides high level advice to Equator Principles Financial Institutions, and he is regular guest lecturer at various universities. John Trudinger is an environmental consultant with more than 40 years of professional experience. Initially qualified as a geologist, his initial experience was on geotechnical investigations for large infrastructure projects. In the early 1970's he became involved in the emerging environmental business, and has since contributed as team member or team leader on environmental assessments for more than 100 resource development and infrastructure projects. He has worked throughout Australia, Asia and North America. His particular interest is the management of mine wastes in the mountainous wet tropics.