The company was founded in 1975 by a consortium that included Anthony Simon Malone, and acquired Rand London Mines.

In the following years Metorex acquired additional properties mining a variety of minerals including gold, coal, asbestos, copper, zinc and tin.

In 2004 Metorex entered into a joint venture to develop the Ruashi copper mine site in the DRC, and subsequently made substantial investments in this project.

[6] MMK, formerly a subsidiary of Forrest Group, owned the flooded Kinsenda and Musoshi copper mines in the Katanga Province.

[7] Due to a Title Revisitation Process initiated by the DRC government, in February 2009 it was confirmed that the Musoshi mine would be returned to the state-owned Sodimico.