Sibudu Cave

Sibudu Cave is a rock shelter in a sandstone cliff in northern KwaZulu-Natal South Africa It is an important Middle Stone Age site occupied with some gaps from 77 000 years ago to 38 000 years ago Evidence of some of the earliest examples of modern human technology has been found in the shelter (although the earliest known spears date back 400 000 years)

Phosphoric acid (PA) is an important industrial chemical used as an intermediate in the fertilizer industry for metal surface treatment in the metallurgical industry and as an additive in the food industry The PA industry is spread out worldwide in Europe Asia and America including countries that operate phosphate rock (PR) mines and produce PA phosphatic fertilizers and

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Cobalt processing preparation of the metal for use in various products Magnetic alloys form the most important use of cobalt The second most important cobalt outlet is in the making of high-temperature alloys in which it improves the high-temperature strength and corrosion resistance

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Developed by a team of scientists industry experts and key industry stakeholders NSF/ANSI/CAN 61 sets health effects criteria for many water system components including: Protective barrier materials (cements paints coatings) Joining and sealing materials (gaskets adhesives lubricants) Mechanical devices (water meters valves filters)

Mining industry of Ghana

The Mining industry of Ghana accounts for 5% of the country's GDP and minerals make up 37% of total exports of which gold contributes over 90% of the total mineral exports Thus the main focus of Ghana's mining and minerals development industry remains focused on gold Ghana is Africa's largest gold producer producing 80 5 t in 2008

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The Mining industry of Ghana accounts for 5% of the country's GDP and minerals make up 37% of total exports of which gold contributes over 90% of the total mineral exports Thus the main focus of Ghana's mining and minerals development industry remains focused on gold Ghana is Africa's largest gold producer producing 80 5 t in 2008

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