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Each year, The Africa Report chronicles the fortunes of the top 500 companies in Africa's key business sectors. These rankings, which were published in February 2013, and are based on firms' 2011 performance, point to some of the important longer-term changes affecting African economies.
Definition: The term "ore" is defined in the current study to describe a concentration of non-metallic, e.g., feldspar, or metallic minerals, e.g. spodumene, in pegmatitic rocks irrespective of its structure and position in the deposit which was or is currently mined for a profit.