Copper metallurgy in Africa - Wikipedia
In West Africa copper was used as medium of exchange symbols of status and kingship jewelry and ritual purposes; this was a part of Bantu tradition prior to their expansion into Central Africa. The use of copper in the Iron Age of Central Africa was produced because of indigenous or internal demand rather than those from outside and it is ...预计阅读时间：10 分钟
Vlakpoort – South Africa. The Stellite Mine – South Africa. The Stellite mine was acquired in late 2010 as part of the Chromex acquisition and will be the primary ore supply to Mogale Alloys thereby integrating the FerroAlloys business. Excess lumpy chrome ore mined at …
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PDF Manganese levels and chemical fractionation in ...
Report from published literature has suggested that there are high levels of trace metals in urban soils of Pretoria South Africa due to various factors such as industrialization vehicular ...
Cubic Lattice - an overview ScienceDirect Topics
The “Cullinan” diamond is the largest gem-quality rough diamond ever found weighing 3106.75 carats 621.35 g from the Premier No. 2 mine in Cullinan South Africa and discovered on January 26 1905. The famous “Koh-i-Noor” Kohinoor is one of the largest cut and polished diamonds in the world weighing 105.6 carats finished.