- Australasian Institute of Mining and Metallurgy, Chartered Professional, Metallurgy
- Australasian Institute of Mining and Metallurgy, Fellow.
- Society for Mining, Metallurgy and Exploration, Inc. (SME-AIME), Member.
- Colorado Section SME G.E.M. Speakers Bureau, Member since 1983, Coordinator, 1992- 1996.
- Legion of Honor Award, 2016.
- The Minerals, Metals, and Materials Society (TMS-AIME), Member.
- TMS Precious Metals Chairperson, 1991-2001, continuing member to 2006
- Journal of Metals Advisory Committee, Precious Metals, 1991-2006.
- Extraction and Processing Division Council, 1991-present.
- Recycling Committee, Member, 1992-present.
- Hydrometallurgy and Electometallurgy Committee, 2010-2019, Secretary: 2013-2017.
- Pyrometallurgy Committee, Member, 2010-2019.
- Waste Treatment & Minimization Committee, Environmentally Clean Processes, involved in the formation by the E&PD Council in 1993, committee member, 1993-2003, Chair 2004-2006.
- REWAS 2004, 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, International Organization Committee member.
- Mining and Metallurgical Society of America, Member, QP (Metallurgy & Environmental).
- American Society for Metals, Member.
- Extractive Metallurgy Chapter of Denver, Past Chairman (ASM, SME and TMS).
- Society of the Sigma XI, Member.
- Lookout Mountain Water District, Vice President and Director, 1988-May, 2006.
- Foothills Fire Protection District, Treasurer and Director, 1994-May, 2006.
