About the Speaker Ed worked in Petroleum Exploration at Houston Oil and Minerals and Tenneco. He moved to Colorado in 1990 and continued his work in geology to the present. He has had a lifelong interest in Colorado geology, mineralogy, and mining history. He has published numerous papers, led field trips, taught continuing education classes, and given slide and PowerPoint programs on these subjects. He has served as president for both the Colorado Chapter of Friends of Mineralogy, and the Mining History Association.