The nonmetallic mineral resources of Arizona are attracting increased attention because of their present and possible future utilization in the industrial expansion of the Pacific Coast region and the Southwest. Production of nonmetallics in Arizona has been small compared with that of metals. Of the $4,150,000,000value of all minerals produced in the State prior to 1947,nonmetallics constituted possibly $59,000,000or about 11/2per cent. Development and mining of nonmetallics have been handicapped by costs of transportation to the industrial centers that offer steady markets. Because of their natural abundance, most nonmetallics are relatively low priced. The potential value of a deposit depends largely upon its location in reference to tra...