Dave Williams earned a BS in Geology from Bates College in Maine and an MS in Igneous and Metamorphic Petrology from the University of Montana. He was employed with the Bureau of Land Management for over 40 years and had been stationed in Denver, Coeur d'Alene, and for most of his career, Butte, Montana. Dave and his colleague Joan Gabelman were responsible for administering the federal mineral laws in the Butte Field Office. He was also been responsible for administering several AML projects in Western Montana. Dave's expertise includes federal mineral laws, general reclamation issues, and mineral and metal exploration. Dave has been actively involved with acid rock drainage issues through the Acid Drainage Technology Initiative and the Global Alliance. Being a mountaineer and a skier Dave has been active for several years on Climate Change issues having written, presented and co-chaired conference sessions on Climate Change.