The Monument No. 2 site consisted of a large open-pit mine, an upgrader, a concentrator and a heap leaching operation. Ore from the mine as well as products from other operations were shipped to mills for further processing and are included in the production totals. Unpublished records of the U.S. Atomic Energy Commission (AEC) indicate the Monument No. 2 site produced more uranium during its procurement program (1947-1970) than any other mine in the State of Arizona. Production tonnage in published records ranged from 773,132 tons in Gregg and Evensen (1989) to 766,998 tons in Scarborough (1981). The purpose of this report is to give a summary of the production history of the site and to present what is believed to be the correct total as the result of researching existing records.