The Mineral Industry Volume N . 29

The Mineral Industry Volume N . 29

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 edition. Excerpt: ...Rept. supplies from other sources, imports of manganese ore. The following table gives the British BRITISH IMPORTS OF MANGANESE ORE IN LONG TONS Total. Average per Month. 1913 601,177 50,098 1914 479,435 39,953 1915 377,324 31,443 1916 439,509 36,625 1917 331,264 27,605 1918 365,606 30,467 1919 265,800 22,150 1920 452,613 37,718 India.--The manganese-bearing districts form a belt that extends from Baroda on the west coast across northern India nearly to Calcutta on the east, a distance of nearly 700 miles. The orebodies are lenses and layers. The largest single deposit has the form of a shallow trough. It is 1% miles long and 45 to 50 ft. thick, and has yielded over 725,000 tons of ore. The total production of India up to 1916 was 8,748,000 tons. (a) Official (t) Estimated, shipping. statistics. (6) (/) Hungary. Includes Herzegovina. (c) Statistics not available, (d) Eiports (0) Shipments from Tchiaturi district; mostly held at port for lack of Japan.--The expansion of the shipbuilding industry and other iron and steel industries during the war brought about a greatly increased demand for manganese which led to much prospecting and development. Russia.--The manganese ore produced in Russia has been mined in three districts: Tchiaturi, in the central part of the Caucasus; Nikapol, on the Dnieper River, a short distance north of the Black Sea; and the central part of the Ural Mountains. Since 1880 the production has been very large. Before the war for many years Russia's output averaged over half a million tons yearly. The reserve of high-grade ore is estimated at 100,000,000 tons of ore running from 53 to 54 per cent. manganese and low in silica and phosphorus. At present the industry is in a state of stagnation. Costs Of more

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  • Paperback
  • 189 x 246 x 19mm | 644g
  • United States
  • English
  • black & white illustrations
  • 1236871243
  • 9781236871244