This report describes the changes in nonfuel mineral industry activity in Arizona and four of its counties between 1981 and 1986. Regional input-output models for Arizona and the counties of Gila, Greenlee, Pima, and Pinal were developed through implan, the U.S. Forest Services's Economic Impact Model. These models generated multipliers to measure total impacts of changes in activity on employment, earnings, and indirect business taxes. From 1981 to 1983 metallic nonfuel mineral production in Arizona declined significantly. Production turned upward after 1983, but cost reductions, the introduction of new technology, and industry restructuring reduced direct employment and earnings over 50% each from their 1981 levels. These changes generated indirect impacts on employment and earnings for other industries in Arizona and the counties where the majority of production occurred. Findings show that county economies are quite sensitive to changes in nonfuel mineral production.