A free new tool has been launched to promote the application of industrial ecology and facilities research on material flows. The Industrial Ecology of Metals Forum maintains two web-based dynamic and interactive compendia of data: one containing the concentrations of metals found in various high-volume materials, and the other containing the flow rate information for high-volume materials. A discussion group focused on building and maintaining the compendia completes the Forum. The Forum also contains an area for comments on data quality issues. The compendia are available to the general public for viewing, but only discussion group members can make additions to or comments on data contained in the compendia. Funding for the Forum is provided by the U.S. EPA’s Great Lakes National Program Office (GLNPO) and by U.S. EPA Region 5. For more information on the Forum, contact Gary Miller, Assistant Director, WMRC.