After De Beers' 15 year long unfruitful search for new diamond deposits, the new CEO Philippe Mellier yearns for the discovery of new diamond deposits comparable by size to those found at Jwaneng in the late 1960's. De Beers may be forced to resort to the costly shaft mining if no such deposit is discovered soon.   http://www.miningweekly.com/article/de-beers-ceo-yearning-for-big-new-diamond-discovery-2012-06-08-1