Mineral Appraisal of the Coronada National Forest, Part 4, Peloncillo Mountains Unit, Cochise County, Arizona, and Hidalgo County, New Mexico; MLA 18-93
Denver, Colorado: Intermountain Field Operations Center, 1993. black spiral comb, 11" x 8.5", 1 folded plate inside rear pocket, 30 pages. from the summary, "Between 1990 and 1992, the U.S. Bureau of Mines studied the mineral resources of the Coronado National Forest to appraise and determine the types and locations..... More
