Technical Report Archive and Image Library (TRAIL) - 1 Matching Results
- Mining Inclined Beds of Phosphate Rock, San Francisco Chemical Co. Mines, Rich County, Utah
- Report issued by the U.S. Bureau of Mines discussing the mining of phosphate rock in Rich County, Utah. As stated in the introduction, "this information circular describes methods used in mining inclined beds of phosphate rock in mines operated by San Francisco Chemical Co." (p. 1). This report includes maps, illustrations, and photographs.