Technical Report: Holpan and Klipdam Alluvial Diamond Properties February 2009

The Holpan and Klipdam Property is located 45 km from Kimberley, South Africa and consists of the adjacent Holpan 161 and Klipdam 157 farms, covering an area of 3,836 hectares. It is situated adjacent to the Leicester hard rock diamond mine from which exceptionally large diamonds have been recovered, and within an area of significant alluvial diamond operations.

The property hosts an extensive alluvial diamond deposit. An estimated inferred resource* of 8,753,163 cubic metres (m3) and indicated resource* of 2,272,502 cubic metres (m3) of diamondiferous gravel at a grade of 0.84 carats/100 m3 was updated in February 2009.

Alluvial operations are continuing, using a large fleet of new equipment. At Klipdam, diamond bearing gravels are processed through a double 18 foot, low-cost, wet rotary pan plant which was completely modernized and upgraded in October 2007.

At Holpan, diamond bearing gravels are treated through a modern Bateman Dense Media Separation (DMS) plant with X-ray, grease and hands-off final recovery. During December 2008 -- January 2009, Rockwell erected a new dewatering screen to the DMS.

For Financial Year 2009 the average diamond sales value achieved for Holpan is US$1,142 per carat, and for Klipdam US$3,350 per carat. A large white 189.6-carat gemstone recovered from the Klipdam mining operation in September 2008 realized an excellent sale price of approximately US$10.2 million.

*Dr. Tania R. Marshall, Pr.Sci.Nat. was the qualified person responsible for the updated resource estimate