 | | Journal (issue) | | Cooper Nottingham, England Anthony R. Kampf L.A, County Mus. of Nat. Hist. Los Angeles, CA Steven R. Morehead...Volume Twenty-eight, Number One Hlmois-Kentucky Fluorite District Correspondents Miguel Calvo Zaragoza...ith calcite from the Minerva No. 1 mine, near Cave in Rock, Illinois. Marvin Rausch collection; Jeff Scovil...York; the Helvetia district, Arizona; O ntario’s Grenville Province; the Sterling mine at Antwerp, New York;...Alpine veins near Sherbrooke, Quebec; the Nanisivik mine on Baffin Island; the fluorite mines of Madoc, Ontario; |  | Van Alstine, R. E., Worl, R.G., Heyl, A.V., Trace, R.D., Parker, R.L., Griffitts, W.R., Sainsbury, C.L., Cathcart, J.B. (1976) Geology and resources of fluorine in the United States. Professional Paper 933. US Geological Survey doi:10.3133/pp933 | Report (issue) | | 1. 2. 3. 4. 5. A sbestos ore Lead ore, Balmat mine, N . Y. Chromite-chromium ore, Washington Zinc ore...Survey in accordance with the provisions of the Mining and Minerals Policy Act of 1970 (Public Law 91-631...discovered or not currently profitable to mine. The mining of mineral deposits, once they are discovered.... . Illinois-Kentucky ............................................................... . Illinois-Kentucky...Illinois-Kentucky fluorspar district, by R. D. Trace ...................................................... . Geologic |  | | Report (volume) | | improved technology that has made it profitable to mine material of lower anq lower grade. Reclamation is...for effective research in 1nining technology ( mining methods, mechanization, tranSJ?Ortation, rock breaking...larger and cheaper supply through more economical mining methods. Whereas generation of electricity and...discovery of new sources and the solution of numerous mining ,a nd metallurgical problems. A challenging problem...producers in the ·Western Hemisphere. Although bauxite mining started as late as 1952 in Jamaica, the country |
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