Gary Ralfe
Ralfe gụrụ akwụkwọ na Michaelhouse School, South Africa na Mahadum Cambridge. Na 1966, ọ sonyeere Anglo American. Kemgbe 1974, ọ na-arụ ọrụ nke ọma maka De Beers. A họpụtara ya onye isi nke De Beers na 1990 wee bụrụ onye isi nchịkwa nke De Beers n'ụwa niile na 1998.

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