The Santa Rita open pit mine presently covers an area of approximately one square mile at the perimeter, with additional areas on the perimeter used as rock stockpiles. The upper most level in the pit is located on the east side at the 6,750 foot elevation and the lowest level in the pit is currently at the 5,400 foot elevation. Up to 60,000 tons of ore per day are delivered to the crusher. Blasthole drilling is about 8,430 feet per day, approximately 130 holes per day. Drill hole cuttings are sampled and assayed for determination of material type.
Material is designated as sulfide ore, leach ore, or low-grade leach ore.
Loading of the materials in the Santa Rita Pit is accomplished with electric shovels varying from 17 cubic yard to 56 cubic yard dipper capacity. The size of dipper used is dependent on whether the shovel is operating in high or low density material. Haul distances are currently averaging about 13,000 feet with 600 feet of lift. The POO provides detailed descriptions of the CMC facility including ancillary facilities, supporting structures, and proposed action. The goal of reclamation of the Santa Rita Mine will be to effectively mitigate impacts to the natural, human, and cultural environment.