Patrice Mosepe, chief executive of African Rainbow Minerals, has emerged as the leading critic of the merger within NAFCOC.

BBC: South Africa trade unity plans slammed

His publicly-traded company, African Rainbow Minerals (ARM) has interests in platinum, nickel, chrome, iron, manganese, coal, copper and gold.

FORBES: South African Billionaire Patrice Motsepe Joins Giving Pledge

Patrice Motsepe is the Chairman of African Rainbow Minerals (ARM), a publicly-traded mining conglomerate which has interests in platinum, nickel, chrome, iron, manganese, coal, copper and gold.

FORBES: The African Billionaires 2013