This workshop will introduce the students to basic stable isotope analyses and how to collect, prepare, and analyze bone and other samples from archaeological sites. The two primary isotopes used in these studies, nitrogen and carbon, will be the focus of this workshop. These isotopes provide information on diet (trophic level) and the source of primary productivity that, when applied to human bone or other tissues, can reveal important information on prehistoric societies, diets, and population movements. The students will learn how to interpret these data with exercises and examples from the archaeological literature. In addition, the workshop will provide basic knowledge of mercury in the environment, both natural and anthropogenic sources, and how this heavy metal enters the food chain. Sample collection and preparative procedures will be reviewed as well as analysis and interpretation of data. Mercury also can correlate with stable isotope analysis and provide additional information on prehistoric behavior and exposure.