Dominique C. de la Roche

MDM Engineering Group Ltd. operates as a mining and metallurgical engineering company. Its services include metallurgical process development, engineering and design, project and construction management, commissioning, and contracting. The company was founded by George Sidney John Bennett and Mike J. Nunn in February 2006 and is headquartered in Johannesburg, South Africa.

Kairos Industrial Holdings Ltd. is a diversified industrial holding company engages in the provision of equipment to the mining and construction industries and exploration of coal deposits. The company manufactures and supplies mining ventilation equipment and clay bricks. It also supplies survivair refuge chambers, survivair-E units, survivair-T units and oxygen candles. The company is headquartered in Pretoria, South Africa.

Rockwell Diamonds, Inc. engages in the operation, development, and production of alluvial diamond deposits. Its project portfolio includes Wouterspan, Saxendrift Mine, Niewejaarskraal, and Remhoogte and Holsloot. The company was founded on November 10, 1988 and is headquartered in Douglas, South Africa.