Rowan Aubrey Karstel

Optimum Coal Holdings Ltd. explores, produces and markets low sulphur thermal coal. It owns and operates Optimum Coal Mine and Koornfontein Mines. The Optimum Coal Mine is an opencast and underground coal mining complex comprising the Kwagga, Pullenshope, Eikeboom, and Boschmanspoort mines. The Koornfontein Mines is located in the Mpumalanga province of South Africa and supplies coal for power generation. The company was incorporated on March 05, 2006 and is headquartered in Johannesburg, South Africa.

Keaton Energy Holdings Ltd. operates as a coal mining company, which engages in producing thermal coal. Its products include metallurgical coal, domestic thermal coal, eskom thermal coal, and coal fines. The company was founded by Amanda Bernadette Glad and Phoevos Pouroulis on April 3, 2006 and is headquartered in Woodmead, South Africa.

Beacon Hill Resources Plc engages in the coal mining and mineral exploration services. It focuses on building and developing a portfolio of resource assets. The company was founded on February 3, 2006 and is headquartered in Centurion, South Africa.