Articles by Michael Green
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For the past 6,000 years diamonds have been highly prized for their sparkle and strength. They are formed in the Earth’s mantle, which lies 110 miles below the surface, by intense pressure and temperatures in excess of 2,400°C. Diamonds are brought to the surface by volcanic eruptions which send large pieces of mantle rock, called xenoliths, upwards. The presence of nitrogen and...Full Article »
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Business Improvement in Mining Africa 2012
Crowne Plaza – The Rosebank, Johannesburg, South Africa
May 14- 16, 2012
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