 | United States. Bureau of Mines - Digital images - 1916 - 1570 pages
...206-207). HOBBS, WH, The old tungsten mine at Trumbull, Conn.: US Geol. Survey 1903. Exhausted. IRVINO, JD, Some recently exploited deposits of wolframite in the Black Hills of Twenty-second Ann. Rept., pt. 2, pp. 7-22, 1901. $2.25. Tungsten mining at Trumbull, Conn.: US Geol.... | |
 | Geologische Bundesanstalt (Austria) - Geology - 1901 - 464 pages
...Classe. Abthlg. I. Bd. 1900. 8°. 47 8. (811—857) mit 5 Textfig. Gesch. d. Dr. A. Bittner. (13464. 8".) Irving, JD Some recently exploited deposits of Wolframite in the Black Hills of South Dakota. (Separat, ans : Transactions of the American Institute of Mining Engineers; febr. 1901) New-York, Inst,... | |
 | Digital images - 1909 - 822 pages
...wolframite occurs in replacement deposits in a sandy dolomite with barite, gold, pyrite, glauconite, etc. IRVING, JD Some recently exploited deposits of wolframite...Trans. Am. Inst. Min. Eng., vol 31, 1901, pp. 683-695. Wolframite occurs near Lead, S. Dak., in the Two Strike, Wasp No. 2, Little Pittsburg, and other mines,... | |
 | United States - 1909 - 420 pages
...southern part, near Hill City and Keystone, the hills exhibit rounded contours with fairly well « Some recently exploited deposits of wolframite in...Dakota: Trans. Am. In.st, Min. Eng., vol. 31, 1901, pp. 683-691. graded valleys, the only jagged or precipitous features being where the harder dikes of pegmatite... | |
 | South Dakota School of Mines and Technology - Cyanide process - 1917 - 242 pages
...brief popular description of the cave and its routes of travel written for fine tourist visitor. 619. Irving, JD Some Recently Exploited Deposits of Wolframite in the Black Hills of South Dakota. Am. Inst. Min. Eng., Trans., vol. 31, pp. 683-695, 1 map, 1901. See also pp. 1024-1025. Gives the history... | |
 | United States. Bureau of Mines - Digital images - 1917 - 1120 pages
...1901. $2.25. Tungsten mining at Trumbull, Conn.: US Geol. Survey Bull. 213, p. 98, 1903. Exhausted. IRVING, JD, Some recently exploited deposits of wolframite in the Black Hills of South Dakota: Am. Inst. Min. Eng. Trans., vol. 31, pp. 6837695, 1902. Describes the general geology and occurrence... | |
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IRVING, JD. Some recently exploited deposits of wolframite in the Black Hills of South Dakota: Am. 
