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acres alluvial assayed average B.T.U. per lb brine Bukoba carats cent claim coal-field commenced Commissioner of Mines Company cost cyanide deposit Dernburg lode diamond District duty throughout East African Engineering escarpment European Clerk Exclusive Prospecting Licence exported fixed carbon following table fuel Geological Survey gold reef Goldfield Government Notice gravels impounded Inspector of Mines Iringa Kagera River Karagwe Ketewaka-Mchuchuma Kigoma kimberlite Kizumbi Kwimba labour Lake Victoria lime Limited Lupa Manyoni Mbeya mica Mines Department mining leases Missenyi Mkadini Monduli Morogoro Msimbazi Musoma Mwanza Newala Njombe Non-coking Nyasaland Minerals Nyasirori open to pegging ounces of bullion output Plateau produced Province Province.—The pumped railway River Basin.—Alluvial River Basin.—This road royalty Ruhuhu River Ruvu River Salaam salt sample sea-water Sekenke shaft Shinyanga Sira River small worker solar evaporation pans specific gravity Syndicate tailings Tanganyika Properties Territory tons of cassiterite total sulphur Ufipa Uluguru Mountains valued