Geoffrey S Plumlee

• An update on USGS studies of the Summitville mine and its downstream environmental effects
• Compositions and metal loadings from several seeps at the Summitville Mine
• Diverse chemical processes in a complex epithermal system
• Geoenvironmental models of mineral deposits, and geology-based mineral-environmental assessments of public lands
• Integrated mineral-resource and mineral-environmental assessments of public lands
• Mineralization in the waning Creede epithermal system, and similar behavior in other systems