Minerals embrace all non-living substances extracted from the earth for use by man. Generally, these economic minerals include the energy fuels (coal, oi1^ natural gas and uranium); metals; and non-metals (or industrial ...

Les estimations tiennent également compte des besoins du Centre en matériel et fournitures des expenses relatives a la construction d'un certain nombre de laboratoires, et des frais divers.

This paper explores the mineral resource-based experience of South Africa and Mozambique in the context of economic clustering. It commences with a synopsis of the theoretical underpinnings of the “cluster” concept and its ...

Dans les autres localités mentionnées plus haut ou on a trouvé du beryl. on a procédé à des prospections, à l'aide de méthodes modernes, pour décéler la présence de beryllium.

The distribution, occurrence, methods of mining, ore dressing, reserves, production and planned future exploration efforts in respect of beryllium and columbium-tantalum minerals in Uganda are described. The outlook for ...

The importance of rare metals in scientific and technical progress has been steadily increasing since the beginning of this century. At the present time it is difficult to conceive any field of modern science which does ...

This paper talks about Rapid increase of production of rare metals including niobium and tantalum used in most important field of modern engineering is essential for technical progress. Constant and ever-growing interest ...

Under article 3 of the explanatory memorandum of the study cycle on some new metals and minerals were mentioned the following:- beryllium, cesium, columbium, germanium, hafnium, rare-earths, tantalum titanium, yttrium and ...

World production of pyrochlore has recently outstripped that of columbite, previously the main source of niobium. Columbite is largely a by-product of tin mining, but the new pyrochlore mines depend almost entirely for ...

This paper presents information on Mineral raw materials in Africa : nickel resources, of the Regional Conference on the Development and Utilization of Mineral Resources in Africa held in Arusha, from 2 to 6 February 1981.