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.

The Minerals, Metals, and Materials Society (TMS-AIME), Member.

TMS Precious Metals Chairperson, 1991-present.

Journal of Metals Advisory Committee, Precious Metals, 1991-present.

Extraction and Processing Division Council, 1991-present.

Waste Recycling Committee, Member, 1992-present.

Environmental Remediation and Waste Treatment Committee, involved in the formation by the E&PD Council in 1993.

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-present.

Foothills Fire Protection District, Treasurer and Director, 1994-present.