The National Association of Secondary Material Industries (NASMI) and the Bureau of Mines have cooperated to sponsor two technically-oriented workshops related to the role of metals recycling and air pollution control technology. The proceedings of these workshops, "Effective Technology and Research for Scrap Metal Recycling" and "Air Pollution Control Technology," are presented in this document. Part I is devoted to eighteen formal presentations on both current techniques and problems in recycling nonferrous metals. The workshop served to establish a new liaison between industry and government, one directed at a consumer objective: to maximize the opportunities for metallic solid waste utilization through economically reusable and technically feasible recycling. Four informal sessions on aluminum, precious metals, copper, and lead zinc are also summarized. Part II covers the air pollution workshop, specifically directed to representatives of the secondary metals industry. Presentations by major manufacturers of air pollution control equipment and well-known engineering consultants on air pollution problems are given, followed by questions and answers for each session. (BL)