 Tchiatouri manganese ore are unfavorable in that the proportion of large pieces obtained is small, and much of the ore is quite soft, and grinds to a fine powder during the handling incidental to mining, cleaning and transportation. The loss of ore during...  Bulletin of the United States Geological Survey - Page 210by Geological Survey (U.S.) - 1910Full view - About this book
 | Geological Survey (U.S.) - Forest reserves - 1898 - 692 pages
...proportion of large pieces obtained is small and much of the ore is quite soft, grinding to a fine powder during the handling incidental to mining, cleaning, and transportation. The loss of ore during transportation is thus larger than it otherwise would be, while the high proportion of fine... | |
 | Mineral industries - 1917 - 402 pages
...the proportion of large pieces obtained is small. Much of the ore is quite soft, and grinds to a fine powder during the handling incidental to mining, cleaning, and transportation. The loss of ore during concentration and transport is therefore considerable ; and much of the fine ore shipped is... | |
 | Edmund Cecil Harder - Manganese - 1910 - 916 pages
...the proportion of large pieces obtained is small, and much of the ore is soft anil grinds to a fine powder during the handling incidental to mining, cleaning,...district: Analysis of well-sorted and cleaned ore from Chiaturi, Russia.0 [Dried at 212° F.] MnO2 86.25 MnO... Cu oxide Ni oxide A1303 CaO MgO BaO K2OandNa/>... | |
 | Mineral industries - 1916 - 822 pages
...proportion of large pieces obtained is small, and much of the ore is quite soft, and grinds to a fine powder during the handling incidental to mining, cleaning and transportation. The loss of ore during concentration and transport is therefore considerable; and much of the fine ore shipped is considered... | |
 | Geological Survey (U.S.) - Forest reserves - 1898 - 696 pages
...proportion of large pieces obtained is small and muuL of the ore is quite soft, grinding to a fine powder during the handling incidental to mining, cleaning, and transportation. The loss of ore during transportation is thus larger than it otherwise would be, while the high proportion of fine... | |
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