Willem Johannes du Plessis

Umcebo Mining (Pty) Ltd. engages in mining and distribution of coal. The company was founded in 2003 and is headquartered in Johannesburg, South Africa.

ARM Coal Pty Ltd. engages in mining of coal. The company is headquartered in Sandton, South Africa.

Umcebo Mining (Pty) Ltd. engages in mining and distribution of coal. The company was founded in 2003 and is headquartered in Johannesburg, South Africa.

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.

ARM Coal Pty Ltd. engages in mining of coal. The company is headquartered in Sandton, South Africa.

ARM Coal Pty Ltd. engages in mining of coal. The company is headquartered in Sandton, South Africa.

ARM Coal Pty Ltd. engages in mining of coal. The company is headquartered in Sandton, South Africa.