groundwater chemistry, acid mine drainage, abandoned mine reclamation, stable isotopes, geochemical modeling, coal ash, FGD - residue, hydrology issues, geochemistry

• Geochemical characterization of coal-combustion byproducts and numerical simulations of their long-term effects as capping materials at coal mine reclamation sites
• Mineral formation and the fate of iron, aluminum and sulfur within field-scale sulfate-reducing bioreactors
• Carbon isotopes as a basis for evaluating alkalinity generation over time with a sulfate-reducing bioreactor in south-central Indiana
• Weathering and leaching characteristics of a fixated scrubber sludge cap at an abandoned mine site in Pike County, Indiana
• Carbon isotopes as a basis for evaluating alkalinity generation over time within a sulfate-reducing bioreactor in south-central Indiana

• Carbon Ore, Rare Earth and Critical Minerals (CORE-CM) Initiative for U.S., Basins
• POTENTIAL FOR CRITICAL MINERALS IN COAL MINING PRODUCTS, BYPRODUCTS, AND REJECTS, WITH SPECIAL EMPHASIS ON RARE EARTH ELEMENTS (REE)
• Interdisciplinary Highly-Collaborative Research
• Critical zone karst observatory
• FY2019 USGS NGGDPP Grant: IGWS FAIR Data Initiative 2019 – Geochemistry and Critical Minerals