Exxaro, Harmony, Anglo, Diesel Power and SA Taxi will take a variety of assets to auction during late July. The assets will be sold via a leading online mining auctioneering platform.
As BHP considers the sale of almost all of the businesses that Billiton brought to the 2001 merger deal, experts say the firm is likely to end up leaving London.
The National Union of Metalworkers in South Africa (NUMSA) has rejected the latest offer because it didn't include a double-digit wage increase for all three years.