Role: This is the website of an academic group researching stocks and flows of metals. The group is evaluating current and historical flows of specific technologically significant materials, determining the stocks available in different types of reservoirs and the flows among the reservoirs, developing scenarios of possible futures of metal use, and assessing metal supply and demand. As of fall 2011, the group has completed work on copper, zinc, chromium, lead, iron, nickel, silver, and stainless steel, comprising complete cycle characterizations for all countries using significant amounts of these materials (more than 50), nine world regions including Europe, North America, and Asia, and the planet as a whole. Targeted studies of a few states and cities have also been accomplished. Specialized studies on tin, cobalt, tungsten, and aluminium have been done as well.