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Books Books 1 - 4 of 4 on Tchiatouri manganese ore are unfavorable in that the proportion of large pieces obtained....
" 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 - United States Geological Survey - Page 210
by Geological Survey (U.S.) - 1910
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Annual Report of the United States Geological Survey to the ..., Part 6

Geological Survey (U.S.) - Forest reserves - 1898
...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...
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Bulletin of the American Institute of Mining Engineers, Issues 113-116

Mineral industries - 1916
...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...
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Transactions of the American Institute of Mining, Metallurgical ..., Volume 56

Metallurgy - 1917
...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...
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Annual Report of the United States Geological Survey to the ..., Part 6

Geological Survey (U.S.) - Forest reserves - 1898
...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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