The Crawford Mountains is a phosphorus-phosphates mine located in Rich county, Utah at an elevation of 6,299 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 6,299 Feet (1,920 Meters)
Commodity: Phosphorus-Phosphates
Lat, Long: 41.718, -111.06300
Map: View on Google Maps
Crawford Mountains MRDS details
Site Name
                            
                            Primary: Crawford Mountains
                        
                    
                            Secondary: Arickaree Mine
                        
                    
                            Secondary: Cherokee Mine
                        
                    
                            Secondary: Pawnee Mine
                        
                    
                            Secondary: Emma Mine
                        
                    
                            Secondary: Tuscarora Mine
                        
                    
                            Secondary: Bradley Mine
                        
                    
                            Secondary: Sioux Mine
                        
                    
                            Secondary: Pearl Mine
                        
                    
                            Secondary: Mandan Mine
                        
                    
                            Secondary: Rex Peak Mine
                        
                    
                            Secondary: Crawford Group
                        
                    
                            Secondary: Crawford Mountains Group
                        
                
Commodity
                                        
                Primary: Phosphorus-Phosphates
                
                            
                Tertiary: Uranium
                
                        
Location
                                                State: Utah 
                                                County: Rich 
                                                District: Western Phosphate 
                    
Land Status
                                                Land ownership: Mixed
                        Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
                        
                                
Holdings
 
                   
                                    
                        Type: Patented
                    
                                    
                        Type: Federal Lease
                    
                            
Workings
                        Type: Underground
        
Ownership
                Owner Name: Stauffer Chemical Co.
                Percent: 50.00
                Home Office: Connecticut
                Info Year: 1967
                Owner Name: U.S. Government
                Percent: 50.00
                Home Office: Dist Of Columbia
                Info Year: 1980
Production
Not available
Deposit
                            Record Type: Deposit
                Operation Category: Past Producer
                Deposit Type: Chemical Sediment, Marine
                Plant Type: Beneficiation (Mill)
                Operation Type: Surface-Underground
                Mining Method: Open Pit
                Milling Method: Washing
                Year First Production: 1907
                Discovery Year: 1904
                Years of Production: 
                Organization: 
                Significant: Y
           
        
Physiography
                General Physiographic Area: Rocky Mountain System
                Physiographic Province: Middle Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
 
                    Type: R
                   Structure: Crawford Thrust
            
 
                    Type: R
                   Structure: Woodruff Thrust
            
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
                                       
                    Unknown: Zircon 
                           
                    Unknown: Calcite 
                           
                    Unknown: Dolomite 
                           
                    Unknown: Feldspar 
                           
                    Unknown: Fluorite 
                           
                    Unknown: Gypsum 
                           
                    Unknown: Illite 
                           
                    Unknown: Kaolinite 
                           
                    Unknown: Limonite 
                           
                    Unknown: Montmorillonite 
                           
                    Unknown: Pyrite 
                           
                    Unknown: Quartz 
                           
                    Unknown: Sphene 
                           
                    Unknown: Tourmaline 
                           
                    Unknown: Apatite 
                        
Comments
Comment (Geology): The Phosphoria Formation Is Subdivided Into Five Members By Mckelvey (Bibliography Ref. L010), Two Of Which (The Meade Peak And Retort Members) Contain Significant Phosphate Deposits. In Utah And Southwestern Wyoming, The Meade Peak Member, And In Central And Northwestern Wyoming, The Retort Member Contain The Deposits Of Potential Interest. The Park City Formation Of Utah And Central Wyoming And The Shedhorn Sandstone Of Northwestern Wyoming Are Stratigraphic Equivalents Of And Intertongue With The Phosphoria Formation. The Phosphoria Formation And Equivalent Formations Are Underlain By Either The Tensleep Sandstone, Weber Quartzite, Wells Formation, Or Diamond Creek Sandstone And Are Overlain By Either The Woodside Or Dinwoody Formations.
Comment (Names): Other Names: Arickaree Mine, Cherokee, Pawnee, Mandan, Emma, Tuscarora, Rex Peak, Bradley, Sioux, Pearl, Crawford Group.
Comment (Production): The Arickaree, Cherokee, Pawnee, Mandan, Emma, and Tuscarora Mines Have Produced Phosphate Rock At Various Times Between 1907 and 1975, But No Production Figures Have Been Released By The Present Owner, Stauffer Chemical Company, Or By The Previous Owner, San Francisco Chemical Company. Production From Other Mines in the area is not known, but is minor.
Comment (General): Also part of the Western Phosphate Field.
Comment (Deposit): This Minerals Availability System Evaluation Was Done As Part Of A 1980 Study Of Utah And Wyoming Phosphate Deposits By The Intermountain Field Operations Center, Denver, Colorado. Domain - The Outcrop Area Falls Roughly Equally On Private Land (Patented Claims) And U.S. Bureau Of Land Management Land With One Section In The Rex Peak Area On State Of Utah Land.
Comment (Ownership): Phosphate Lands May Be Leased From The U.S. Government. Currently, There Is One Active Federal Lease Within The Area Included In This Deposit. The Land Controlled By Stauffer Chemical Co. Is Partially Composed Of Patented Claims Under Perpetual Lease And Partially The Federal Lease Mentioned Above. The Percent Ownership Figures Given Are Approximations Based On Outcrop Strike Lengths.
Comment (Economic Factors): Mining and beneficiation costs for each proposed operation were obtained by applying one of 34 basic mine models and 5 basic mill models developed for evaluating Utah and Wyoming phosphate deposits. Site-specific cost adjustments were made for land acquisition, infrastructure, unusual haulage distance to mill, the presence of multiple beds requiring mining of waste, and mill feed grade and recovery. All costs are in January 1980 dollars. The schedule of costs is based on the assumption that each proposed operation will be independently developed as soon as technically possible after the official January 1979 base date for the current phosphate study. Thus, land acquisition, exploration, and infrastructure capital costs are assumed to begin in 1979. Mine and mill capital costs include a contingency allowance of 15 percent of all other capital costs except working capital. Mine and mill working capital is estimated at 60 days of operating cost. A Bureau costing manual (bibliography data set ref. I030) was used to estimate surface and underground mine exploration, development, reclamation, plant, and equipment capital costs; underground mine operating costs; capital and operating costs for the calcining-hydration mill (if used) and for the flotation sections of other mills; costs of transporting products from proposed mills to existing final processing plants; and access road construction cost. Surface mine operating costs are size-scaled, using scaling factors from Bennett (bibliography data set ref. I001), and others (U.S. office of audit and investigation) for Idaho phosphate mines in 1976 and 1977. Infrastructure capital costs assigned to each proposed mine consist of only those railroad, transmission line, and access road costs which are needed for development of each mine. Railroad cost is estimated by the Richardson rapid construction cost estimating system (bibliography data set ref. I020). Transmission line cost is estimated from typical industry costs (A.W. Watts, 1980, Water and Power Resources Services, personal communication). Access road costs are estimated by using the capital and operating cost estimating handbook (bibliography data set ref. I030). Land acquisition costs are based on typical competitive bids for leases in southeastern Idaho, adjusted for specific deposit grade and thickness. Lease rentals and royalties are based on current rates for federal leases in the western phosphate field. Capital and operating costs for all mills, excepting the calcination-hydration mill (if used) and flotation sections of other mills, are size-scaled, using scaling factors from Bennett (bibliography data set ref. I001), from costs given for a sizing and calcining mill described by de Voto, et al. (bibliography data set ref. R030), vol. 2, appendix d. Site-specific cost adjustments for mill feed grade and recovery are made, using relative cost factors calculated from average cost and recovery curves for altered and unaltered ores (bibliography data set ref. I010).
References
                
                                        Reference (Reserve-Resource):      OF UTAH:  UTAH AGR. EXPT. STA. BULL. 304, 23 P. 
                                                                
            
                
                                        Reference (Workings): BEALL, J. V., AND MERRITT, P. C., 1966, PHOSPHATE AND POT- 
                                                                
            
                
                                        Reference (Geology):      GEOLOGICAL SURVEY BULL. 430, P. 457-553. 
                                                                
            
                
                                        Reference (Geology): GALE, H. S., AND RICHARDS, R. W., 1910, PHOSPHATES, IN U.S. 
                                                                
            
                
                                        Reference (Geology):      CIRC. 306, 40 P. 
                                                                
            
                
                                        Reference (Geology):      FORMATION IN UTAH, 1949-51:  U.S. GEOLOGICAL SURVEY 
                                                                
            
                
                                        Reference (Geology):      ERALOG. SURVEY BULL. 59, 54 P., 3 PLATES. 
                                                                
            
                
                                        Reference (Geology): CHENEY, T. M., 1957, PHOSPHATE IN UTAH:  UTAH GEOL. AND MIN- 
                                                                
            
                
                                        Reference (Reference):      FIELD:  U.S. GEOLOGICAL SURVEY BULL. 1018, 89 P. 
                                                                
            
                
                                        Reference (Reference): HARRIS, R. A., DAVIDSON, D. F., AND ARNOLD, B. P., 1954, 
                                                                
            
                
                                        Reference (Reference):      BIBLIOGRAPHY OF THE GEOLOGY OF THE WESTERN PHOSPHATE 
                                                                
            
                
                                        Reference (Geology):      VEY PROF. PAPER 152, 453 P., 12 PLATES. 
                                                                
            
                
                                        Reference (Geology):      SOURCES OF PART OF SOUTHEASTERN IDAHO:  U.S. GEOL. SUR- 
                                                                
            
                
                                        Reference (Geology):      P. 195-205. 
                                                                
            
                
                                        Reference (Geology): MANSFIELD, G. R., 1927, GEOGRAPHY, GEOLOGY, AND MINERAL RE- 
                                                                
            
                
                                        Reference (Deposit):      AND THE WESTERN PHOSPHATE FIELD:  IDAHO BUREAU OF MINES AND 
                                                                
            
                
                                        Reference (Geology):      OF UTAH:  UTAH GEOL. AND MINERALOG. SURVEY BULL. 73, 
                                                                
            
                
                                        Reference (Deposit): DAY, R. L., 1973, TRENDS IN THE PHOSPHATE INDUSTRY OF IDAHO 
                                                                
            
                
                                        Reference (Geology):      CHENEY, T. M., 1956, STRATIGRAPHIC SECTIONS OF THE 
                                                                
            
                
                                        Reference (Geology): SWANSON, R. W., CARSWELL, L. D., SHELDON, R. P., AND 
                                                                
            
                
                                        Reference (Geology):      VEY CIRC. 211, 30 P. 
                                                                
            
                
                                        Reference (Geology):      PHOSPHORIA FORMATION IN UTAH, 1947-48:  U.S. GEOL. SUR- 
                                                                
            
                
                                        Reference (Geology):      AND STEWART, M. D., 1952, STRATIGRAPHIC SECTIONS OF THE 
                                                                
            
                
                                        Reference (Geology):      SURVEY BULL. 923, 54 P., PLATE. 
                                                                
            
                
                                        Reference (Geology): SMITH, L. E., HOSFORD, E. G., SEARS, R. S., SPROUSE, D. P., 
                                                                
            
                
                                        Reference (Geology):      THE RANDOLPH QUADRANGLE, UTAH - WYOMING:  U.S. GEOL. 
                                                                
            
                
                                        Reference (Geology): RICHARDSON, G. B., 1941, GEOLOGY AND MINERAL RESOURCES OF 
                                                                
            
                
                                        Reference (Geology):      SPRINGS, WYO. 
                                                                
            
                
                                        Reference (Geology):      FROM U.S. GEOLOGICAL SURVEY CONSERV. DIV. OFFICE IN ROCK 
                                                                
            
                
                                        Reference (Geology):      UTAH:  U.S. GEOLOGICAL SURVEY UNPUB, REPT., 162 P., OBTAINED 
                                                                
            
                
                                        Reference (Geology):      THE PHOSPHATIC SHALE MEMBER OF THE PHOSPHORIA FORMATION 
                                                                
            
                
                                        Reference (Geology):      IN WESTERN WYOMING, SOUTHEASTERN IDAHO, AND NORTHERN 
                                                                
            
                
                                        Reference (Geology): MCKELVEY, V. E., 1946, PRELIMINARY REPORT ON STRATIGRAPHY OF 
                                                                
            
                
                                        Reference (Geology): GERE, W. C., 1964, PHOSPHATE, IN MINERAL AND WATER RESOURCES 
                                                                
            
                
                                        Reference (Geology):      M. A. 1953, STRATIGRAPHIC SECTIONS OF THE PHOSPHORIA 
                                                                
            
                
                                        Reference (Geology): CHENEY, T. M., SMART,  R. A., WARING, R. G., AND WARNER, 
                                                                
            
                
                                        Reference (Ownership): U.S. BUREAU OF LAND MANAGEMENT, 1978, STATE OF UTAH LAND 
                                                                
            
                
                                        Reference (Ownership):      OWNERSHIP AND PUBLIC MANAGEMENT, BEAR LAKE - C:  U.S. 
                                                                
            
                
                                        Reference (Ownership):      MONTANA, UTAH, AND WYOMING, 1979:  U.S. BUR MINES SPE- 
                                                                
            
                
                                        Reference (Ownership):      IAL REPT. (IN PRESS), TEXT WITH MAPS AND OVERLAYS. 
                                                                
            
                
                                        Reference (Ownership):      FEDERAL LAND STATUS IN THE OVERTHRUST BELT OF IDAHO, 
                                                                
            
                
                                        Reference (Geology):      MINES REPT. INV. 6468, 95 P. 
                                                                
            
                
                                        Reference (Ownership): SCHUMACHER, O. L., PENSE, R. A., AND DAVIS, R. B., 1979, 
                                                                
            
                
                                        Reference (Reserve-Resource):      REPT. INV. 6934, 158 P. 
                                                                
            
                
                                        Reference (Geology):      CLASSIFICATION OF WESTERN PHOSPHATE ORES:  U.S. BUR. 
                                                                
            
                
                                        Reference (Reserve-Resource):      PART 4, WYOMING AND UTAH:  U.S. BUREAU OF MINES 
                                                                
            
                
                                        Reference (Reserve-Resource):      THE WESTERN PHOSPHATE INDUSTRY AND ITS RESOURCES - 
                                                                
            
                
                                        Reference (Ownership):      SCALE, 1 SHEET. 
                                                                
            
                
                                        Reference (Reserve-Resource): COFFMAN, J. S., AND SERVICE, A. L., 1967, AN EVALUATION OF 
                                                                
            
                
                                        Reference (Ownership):      STATUS:  U.S. BUR. OF LAND MANAGEMENT MAP, 1:500,000 
                                                                
            
                
                                        Reference (Ownership): U.S. BUREAU OF LAND MANAGEMENT, 1978, STATE OF WYOMING LAND 
                                                                
            
                
                                        Reference (Ownership):      BUR. LAND MANAGEMENT MAP, 1:250,000 SCALE, 1 SHEET. 
                                                                
            
                
                                        Reference (Geology): MABIE, C. P., AND HESS, H. D., 1964, PETROGRAPHIC STUDY AND 
                                                                
            
                
                                        Reference (Geology):      TAIN ASSOC. OF GEOL. 15TH ANN. FIELD CONF., P. 99-102. 
                                                                
            
                
                                        Reference (Production):      CALCINATION, THE MATERIAL BALANCE:  RUDARSKO - 
                                                                
            
                
                                        Reference (Production): EBERL, E., 1970, BENEFICIATION OF CALCIUM PHOSPHATE BY 
                                                                
            
                
                                        Reference (Production):      UNIV. OF WYO. NAT. RES. RESEARCH INST. BULL. 6, 60 P. 
                                                                
            
                
                                        Reference (Production):      PHOSPHATE ROCK - CHARACTER, PROCESSING, AND ECONOMICS: 
                                                                
            
                
                                        Reference (Production): DUNCAN, W. E., AND FISK, H. G., 1957, CENTRAL WYOMING 
                                                                
            
                
                                        Reference (Geology):      1:250,000-SCALE MAP, 1 SHEET. 
                                                                
            
                
                                        Reference (Geology):      BY 2-DEGREE TOPOGRAPHIC MAP:  U.S. GEOLOGICAL SURVEY, 
                                                                
            
                
                                        Reference (Geology):      375, 30 P. 
                                                                
            
                
                                        Reference (Geology): U.S. GEOLOGICAL SURVEY, 1954, OGDEN, UTAH; WYOMING, 1-DEGREE 
                                                                
            
                
                                        Reference (Geology):      PHOSPHORIA FORMATION, 1953:  U.S.GEOLOGICAL SURVEY CIRC. 
                                                                
            
                
                                        Reference (Geology):      PHOSPHORITES OF THE PHOSPHORIA FORMATION, IN INTERMOUN- 
                                                                
            
                
                                        Reference (Geology): GULBRANDSEN, R. A., 1967, SOME COMPOSITIONAL FEATURES OF 
                                                                
            
                
                                        Reference (Geology):      3 PLATES. 
                                                                
            
                
                                        Reference (Geology):      U.S. GEOLOGICAL SURVEY PROF. PAPER 313-A, P. 1-47, 
                                                                
            
                
                                        Reference (Geology):      SHEDHORN FORMATIONS IN THE WESTERN PHOSPHATE FIELD: 
                                                                
            
                
                                        Reference (Production):      ENG., JAN. 1978, P. 37-40. 
                                                                
            
                
                                        Reference (Geology): MCKELVEY, V. E., 1959, THE PHOSPHORIA, PARK CITY, AND 
                                                                
            
                
                                        Reference (Production):      ADVANCES IN BENEFICIATION OF WESTERN PHOSPHATES:  MIN. 
                                                                
            
                
                                        Reference (Production):      PRESENTED AT S.M.E. FALL MEETING AND EXHIBIT, ST. LOUIS 
                                                                
            
                
                                        Reference (Production):      ADVANCES IN BENEFICIATION OF WESTERN PHOSPHATES, PAPER 
                                                                
            
                
                                        Reference (Production): RULE, A. R., KIRBY, D. E., AND DAHLIN, D. C., 1977, RECENT 
                                                                
            
                
                                        Reference (Production):      CONF.; ORLANDO, FLA., OCT. 23-27, 1979, 11 P. 
                                                                
            
                
                                        Reference (Production):      FORMATION, PAPER PRESENTED AT ISMA TECHNICAL/ECON. 
                                                                
            
                
                                        Reference (Production):      PARTIALLY ALTERED PHOSPHATE ROCK OF THE PHOSPHORIA 
                                                                
            
                
                                        Reference (Deposit): CLABAUGH, P. S., 1946, PERMIAN PHOSPHATE DEPOSITS OF MONTANA, IDAHO, WYOMING, AND UTAH:  U.S. GEOLOGICAL SURVEY STRATEGIC MINER. INV. PRELIM. MAP 3-198, 1 SHEET. 
                                                                
            
                
                                        Reference (Workings):      U.S. BUREAU OF MINES INF. CIRC. 7849, 27 P. 
                                                                
            
                
                                        Reference (Workings):      SAN FRANCISCO CHEMICAL CO. MINES, RICH COUNTY, UTAH: 
                                                                
            
                
                                        Reference (Workings): WIDEMAN, F. L., 1958, MINING INCLINED BED OF PHOSPHATE ROCK, 
                                                                
            
                
                                        Reference (Workings):      OPERATIONS CENTER, U.S. BUREAU OF MINES, DENVER, COLO. 
                                                                
            
                
                                        Reference (Workings):      REPT., 190 P.  COPY AVAILABLE AT INTERMOUNTAIN FIELD 
                                                                
            
                
                                        Reference (Workings):      TAIN EXPT. STA. ADMINISTRATIVE PUB., UNPUB., RESTRICTED 
                                                                
            
                
                                        Reference (Workings):      FERENCE ON PHOSPHATE ROCK:  U.S. BUREAU OF MINES INTERMOUN- 
                                                                
            
                
                                        Reference (Workings): U.S. BUREAU OF MINES, 1957, PROCEEDINGS OF THE PROGRAM CON- 
                                                                
            
                
                                        Reference (Workings):      TAIN ASSOC. OF GEOL. 15TH ANN. FIELD CONF., P. 203-209. 
                                                                
            
                
                                        Reference (Workings):      MOUNTAIN - LEEFE AREA, UTAH AND WYOMING, IN INTERMOUN- 
                                                                
            
                
                                        Reference (Deposit):      P. 230-276. 
                                                                
            
                
                                        Reference (Workings): KING, D. L., SR., 1967, SAN FRANCISCO CHEMICAL CO., CRAWFORD 
                                                                
            
                
                                        Reference (Deposit):      III (NON-FUEL MINERALS), REPT. BY CAMERON ENGINEERS, 
                                                                
            
                
                                        Reference (Deposit):      REVIEW AND FORECAST - WYOMING MINERAL INDUSTRIES, BOOK 
                                                                
            
                
                                        Reference (Deposit):      CONF., 287 P., 3 PLATES. 
                                                                
            
                
                                        Reference (Deposit): WYOMING NATURAL RESOURCE BOARD, 1969, WYOMING PHOSPHATE, IN 
                                                                
            
                
                                        Reference (Deposit):      FIELD:  INTERMOUNTAIN ASSOC. OF GEOL. 15TH ANN. FIELD 
                                                                
            
                
                                        Reference (Deposit):      NO. 50-820, 1102 P. 
                                                                
            
                
                                        Reference (Deposit): HALE, L. A., ED., 1967, ANATOMY OF THE WESTERN PHOSPHATE 
                                                                
            
                
                                        Reference (Deposit):      EASTERN IDAHO:  U.S. DEPT. OF AGR. CONTRACT 
                                                                
            
                
                                        Reference (Deposit): GARRAND CORPORATION, 1975 (?), PHOSPHATE RESERVES OF SOUTH- 
                                                                
            
                
                                        Reference (Workings):      P. 75-99. 
                                                                
            
                
                                        Reference (Deposit):      GEOL. PAMPHLET 155, 63 P., 1 PLATE. 
                                                                
            
                
                                        Reference (Workings):      ASH MINERALS TO FEED THE WORLD:  MIN. ENG., OCT. 1966, 
                                                                
            
                
                                        Reference (Reserve-Resource):      STA. BULL. 290, 44 P. 
                                                                
            
                
                                        Reference (Reserve-Resource): WILLIAMS, J. S., AND HANSON, A. M., THE PHOSPHATE RESERVES 
                                                                
            
                
                                        Reference (Reserve-Resource): WILLIAMS, J. S., 1942, PHOSPHATE IN UTAH;  UTAH AGR. EXPT. 
                                                                
            
                
                                        Reference (Reserve-Resource):      CORP.) BY EARTH SCIENCES INC., 1396 P. PLUS PLATES. 
                                                                
            
                
                                        Reference (Reserve-Resource):      OF ENERGY CONTRACT 50-54-5903 (BENDIX FIELD ENG. 
                                                                
            
                
                                        Reference (Reserve-Resource):      STATES AND FREE WORLD:  SUBCONTRACT 78-177-S TO DEPT. 
                                                                
            
                
                                        Reference (Reserve-Resource):      URANIUM RECOVERY FROM PHOSPHATE RESOURCES, UNITED 
                                                                
            
                
                                        Reference (Reserve-Resource):      PHOSPHATE RESOURCES AND TECHNOLOGY AND ECONOMICS OF 
                                                                
            
                
                                        Reference (Reserve-Resource): DE VOTO, R. H., AND STEVENS, D. N., ED., 1979, URANIFEROUS 
                                                                
            
                
                                        Reference (Production):      FLOTATION OF CARBONATE AND SILICATE MINERALS FROM 
                                                                
            
                
                                        Reference (Production): RULE, A. R., DAHLIN, D. C., AND FERGUS, A. J., 1978, 
                                                                
            
                
                                        Reference (Production):      1968, P. 11-21. 
                                                                
            
                
                                        Reference (Production):      PHOSPHORUS AND POTASSIUM, NO. 35, MAY/JUNE 
                                                                
            
                
                                        Reference (Production): NEUBERGER, R., 1968, PHOSPHATE ROCK CALCINATION IN ISRAEL: 
                                                                
            
                
                                        Reference (Production):      U.S. BUREAU OF MINES REPT. INV. 8154, 17 P. 
                                                                
            
                
                                        Reference (Production):      CALCAREOUS PHOSPHATE ROCK BY CALCINATION AND HYDRATION: 
                                                                
            
                
                                        Reference (Production): GOOD, P. C., 1976, BENEFICIATION OF UNWEATHERED INDIAN 
                                                                
            
                
                                        Reference (Production):      ITALY, APRIL 23-24, 1975, P. 53-54. 
                                                                
            
                
                                        Reference (Production):      INTERNAT. MINERALS PROCESSING CONGRESS, KAGLIARI, 
                                                                
            
                
                                        Reference (Production):      FICIATION OF LEAN PHOSPHATE WITH CARBONATE GANGUE, 11TH 
                                                                
            
                
                                        Reference (Production):      BENEFICIATION STUDIES ON A HIMALAYAN LEAN PHOSPHATE 
                                                                
            
                
                                        Reference (Production):      DEPOSIT WITH CALCAREOUS GANGUE, IN SEMINAR ON BENE- 
                                                                
            
                
                                        Reference (Production): GOKHALE, K. V. G. K., RAO, T. C., AND BISWAS, A. K., 1975, 
                                                                
            
                
                                        Reference (Production):      METALURSKI ZBORNIK, NO. 2-3, 1970, P. 275-283. 
                                                                
            
                
                                        Reference (Production):      MO., OCT. 19-21, 1977, 17 P. 
                                                                
            
                
                                        Reference (Production): RULE, A. R., KIRBY, D. E., AND DAHLIN, D. C., 1978, RECENT 
                                                                
            
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These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.