Developing local skills in Sudan's extractive industry By Osama Abdel Karim Aloub, Technical Adviser (Metallurgy), Rida Mining Group, Sudan The views expressed are those of the author and do not necessarily reflect the views of UNCTAD.
The use of mercury in gold mining is causing a global health and environmental crisis. Mercury, a liquid metal, is used in artisanal and smallscale gold mining to extract gold from rock and sediment. Unfortunately, mercury is a toxic substance that wreaks havoc on miners' health, not to mention the health of the planet.
In mines, mercury is used to recover minute pieces of gold that is mixed in soil and sediments. Mercury and gold settle and combine together to form an amalgam. Gold is then extracted by vaporizing the mercury. The artisanal smallscale gold mining (ASGM) sector exposes miners to toxic mercury when they use the chemical to extract gold from ore.
Diamond and gold production are now well down from their peaks, though South Africa is still number 5 in gold but remains a cornucopia of mineral riches. It is the world's largest producer of chrome, manganese, platinum, vanadium and vermiculite. It is the second largest producer of .
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Pure gold is designated 24 carat, which compares with the "fineness" by which bar gold is defined. The most widely used alloys for jewellary in Europe are 18 and 14 carat, although 9 carat is popular in the UK.
This study is part of an action research programme to improve the processing practices of smallscale oil palm fruit processors in the Kwaebibirem District of Ghana. The diagnosis has assessed the processing practices of smallscale oil palm fruit processors in six purposively selected sites in the district.
Mining was Zimbabwe's leading industry in 2002, contributing 27% of export trade. The chief minerals were coal, gold, copper, nickel, tin, and clay, and Zimbabwe was a world leader in the production of lithium minerals, chrysotile asbestos, and ferrochromium, with more than .
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The use of medicinal plants as a fundamental component of the African traditional healthcare system is perhaps the oldest and the most assorted of all therapeutic systems. In many parts of rural Africa, traditional healers prescribing medicinal plants are the most easily accessible and affordable health resource available to the local community and at times the only therapy that subsists.
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