 | | Journal (article/letter/editorial) | | precolonial (1650–1850 CE) tin smelting slags from Rooiberg, Limpopo Province, South Africa ROBERT B. HEIMANN1...Department of Archaeology, University of Cape Town, South Africa 3 Department of Anthropology, University of...prehistoric tin smelting activities (1650–1850 CE) excavated at Rooiberg, Limpopo Province, South Africa were...concentrations of tin oxide suggesting a low level of metal recovery that resulted in substantial tin losses. In...skeletal cassiterite, and complex spinels, as well as tin prills ranging in size from a few to tens of micrometres |  | | Journal (article/letter/editorial) | | matrix-matched reference material: Examples from worldwide tin deposits spanning the Proterozoic to the Tertiary...matrixmatched reference material: Examples from worldwide tin deposits spanning the Proterozoic to the Tertiary...matrix-matched reference material: Examples from worldwide tin deposits spanning the Proterozoic to the Tertiary...Abstract. Cassiterite (SnO2), a main ore mineral in tin deposits, is suitable for U–Pb isotopic dating CR...cassiterite from tin deposits in Bolivia, Brazil, China, Russia, Saudi Arabia, South Africa, IP Spain, |  | | Book (edition) | | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official ‘handbook on the mineral resources of South Africa, it has become necessary to revise, or rather...great diversity and magnitude of South African mineral deposits and local mining operations, the Economic...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; |  | | Report (issue) | | ASSISTANCE OF THE SCIENTTFIC AND TECHNICAL STAFF TIN ORES BY G. M. DAVIES, M.Sc. (LoND.), F.G.S. Scientinc... CONTENTS CHAPTER I TIN ORES : T THE ORES R OCCURRENCE, CHARACTERS AND USES PAOB OF TIN-WORLD'S PRODUCTION...PRODUCTION OF TIN ORE-VALUATION OF TIN ORE-THE PRICE OF TIN -THE PROPERTIES OF TIN-THE USES OF TIN• SECONDARY...SECONDARY TIN • • • • • I CHAPTER II SOURCES OF SUPPLY OF TIN ORES {a) BRITISH EMPIRE : Europe : United...Settlements . 29 Africa: Gold Coast, Nigeria, N yasaland, Rhodesia, Union of South Africa, Swaziland 47 |  | | Journal (issue) | | a useful foodstuff, and their cultivation for local use might be encouraged in districts where more...perfected. Good crops can be grown in the Gezira, south of Khartoum, where an extensive irrigation scheme...production of wheat in the Sudan does not meet the local demands, and considerable WHEAT FROM THE SUDAN...demonstration stations which are under the control of the local Department of Agriculture, and three samples of...from the pe-gyas received from Madaya (Mandalay District), I{yaukse, Monywa, Katha, Tharrawaddy, and Falam |  | | Journal (issue) | | cotton is cultivated in the Sudan are the Tokar district of Reel Sea Province, the l(assala, and to a less...experi1nental areas, is in the last mentioned district, where pumps are used ; but a scheme for irrigating...showed a marked decrease (see p. 192). In the Tokar district, where the land is flooded by the annual overflow...Until a few years ago the cotton produced in this district was of inferior quality; it was carelessly cultivated...variety-Mitafifi-has been grown throughout the district, the cultivation and picking are better performed |  | | Report (issue) | | JUNE COWEN 1977. Mountain diamonds The Roof of Africa — that’s what they call the wild peaks and sweeping...Central and South America Australasia Far East Southern Africa Central and East Africa West Africa North Africa...Africa and the Middle East Northern Europe Western Europe Eastern Europe Publisher URSEL en = FORT...Mercury Potash Steel Sulphur Tantalum Tellurium Tin Titanium Tungsten Uranium Vanadium Rare Earths Rhenium...Guinea Sierra Leone Somalia South Africa 462 431 South West Africa 443 Soviet Union Spain Sri Lanka |
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