English: Report of trip by Albert E. Wiggin and J.B. Johnson to Globe and Miami, Arizona, to study plants, smelters, and mills of the Inspiration Consolidated Copper Company, the International Smelting and Refining Company, the Miami Copper Company, and the Old Dominion Copper Mining and Smelting Company. The report is addressed to Frederick Laist, Manager, Washoe Reduction Works. Includes 20 photoprints of architectural drawings of smelting processes and of smelting plants in Miami, Ariz.