The purpose of this study was to investigate the economic impact of prospective changes in materials use in the U.S. motor vehicle, household furniture and appliances, beverage packaging, and highway and street construction industries under alternative scenarios. The impact of increased imports of automobiles and a changing recycling rate of nickel was also examined. Under assumed economic growth rates and structural changes in the U.S. economy, projections of output and consumption levels of selected industries and level of nonfuel minerals to 2000 were computed. Chapter I of the report addresses the applicability of input-output techniques followed by a detailed description of the structure of the model in chapter II. Chapter III discusses the economic growth assumptions of the United States to 2000 as well as data and assumptions used in designing each of the eight scenarios included in the study. Results, analyses, and conclusions of each scenario are presented.