 | California State Mining Bureau. Library - 1892 - 168 Seiten
...METEOROLOGICAL Observations, in 1872, in Utah, Idaho, and Montana. By H. Gannett. 1 vol. (paper) 1 METHODS of Working and Surveying the Mines of the Longdale Iron Company, Virginia. -[891. pamphlet.. 5 METHOD of Designing Screw Propellers. By C. Hoehle. Philadelphia, 1886 4 METRIC... | |
 | Lake Superior Mining Institute - 1914 - 382 Seiten
...the Transactions of the American Institute of Mining Engineers for the year 1891, under the title of "Methods of Working and Surveying the Mines of the Longdale Iron Company, Virginia." Mr. Johnson, himself, told me many years ago that he had never heard of the Brotherton use of this... | |
 | 1901 - 1078 Seiten
...Albuquerque .sheet [New Mexico]. See Herrick (CL) and Johnson (DW), No. 2465. 2912 Johnson (Guy R.). Methods of working and surveying the mines of the Longdale Iron Company, Virginia. Am. Inst. Mg. Kngrs., Trans., vol. xx, pp. 96-107, 1892. This ore body is occasionally overlain by... | |
 | Fred Boughton Weeks - 1902 - 732 Seiten
...Albuquerque sheet [New Mexico]. See Herrick (CL) and Johnson (DW), No. 2465. 2912 Johnson (Guy R.). Methods of working and surveying the mines of the Longdale Iron Company, Virginia. Am. Itist. Mg. Engrs., Trans., vol. xx, pp. 96-107, 1892. This ore body is occasionally overlain by... | |
 | Fred Boughton Weeks - 1902 - 1084 Seiten
...Albuquerque sheet [New Mexico]. See Herrick (CL) and Johnson (DW), No. 2465. 2912 Johnson (Guy R.). Methods of working and surveying the mines of the Longdale Iron Company, Virginia. Am. Inst. Mg. Engrs., Trans., vol. xx, pp. 96-107, 1892. This ore body is occasionally overlain by... | |
 | Thomas Leonard Watson - 1907 - 1010 Seiten
...Soft Ore Bodies at Low Moor. Transactions American Institute of Mining Engineers. 1889, XVII, 103. Methods of Working and Surveying the Mines of the Longdale Iron Company, Virginia. Transactions American Institute of Mining Engineers, 1892, XX, 96-107. Origin of the Oriskany Limonites.... | |
 | Walter Richard Crane - 1909 - 856 Seiten
...pages. I. BROWN HEMATITE ORE MINING (Method). By HM Chance. E. & MJ, vol. 40, p. 57. 1J columns. I. METHODS OF WORKING AND SURVEYING THE MINES OF THE LONGDALE IRON COMPANY, VIRGINIA. By G. R. Johnson. TAIME, vol. 20, p. 96. Тнк CORNWALL IRON MINE AND SOME RELATED DEPOSITS IN PENNSYLVANIA.... | |
 | Walter Richard Crane - 1909 - 854 Seiten
...219. SURVEY OP UNDERGROUND CONNECTIONS AT LEAVENWORTH, KANSAS. By EA Sperry. TAIME, vol. 24, p. 25. METHODS OF WORKING AND SURVEYING THE MINES OF THE LONGDALE IRON COMPANY, VIRGINIA. By GR Johnson. TAIME, vol. 20, p. 96. A MINING SURVEY. By JF Wilkinson. TAIME, vol. 30, p. 693. VOLUME... | |
 | Society of American Foresters - 1911 - 284 Seiten
...North Carolina. (Geological society, London. Quarterly journal, 1874, v. 30: 303-5.) Johnson, Guy R. Methods of working and surveying the mines of the Longdale iron company, Virginia. (American institute of mining engineers. Transactions, 1892, v. 20: 96-107.) Minerals of the Rmbreville... | |
 | Iron and Steel Institute - 1891 - 570 Seiten
...phosphorus. Manganiferous ores generally occur near the surface. The Longdale Iron Mines in Virginia.— The methods of working and surveying the mines of the Longdale Iron Company, Virginia, are described by Mr. GR Johnson. t In these mines the Oriskany sandstone is replaced by brown haematite,... | |
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Trans., vol. xx, pp. 96-107, 1892. This ore body is occasionally overlain by Helderberg limestone, and the latter is overlain by Devonian shale. Describes the method of opening the ground and of surveying the mines. 2913 The Embreville estate, Tennessee.... 