Dr Belkin for almost 50 years has been with the USGS as a Research Geologist whose work focuses on geochemistry geochemistry. Most recently he has been the Project Chief of the Reston Microbeam Facility, where they are creating a baseline of chemical and textural properties of mineral species – specifically on halogens, HAP’s, elements or rare earth elements and a Project Leader on a program focusing on the Geochemistry of Solid Fuels, specific as it relates to coal in China. His total experience includes delving into issues of Health Impacts. He has published 76 papers to date.