• Anglo Platinum Management Services
• Anglo American Corporation of SA
• Johannesburg Consolidated Investments
  
• Goldfields of SA
  
• General Mining
  
• De Beers
  
• Anglovaal
  
• Krupp Polysius (Pty) Ltd
  
• Keeve Steyn
  
• Kenwalt
  
• Hawker Siddeley
  
• Concor Construction
  
• Cementation
  
• Sasol Mining (Pty) Ltd
  
• Namakwa Sands
  
• Iscor Heavy Mines

• Rand Refinery Ltd
  
• Chamber of Mines
  
• Polysius (Pty) Ltd
  
• Mannesman Demag SA
  
• IMS Process Plant
  
• Aquazur
  
• Bateman’s
  
• Deutsche Babcock
  
• Samancor
  
• Mintek
  
• Consolidated Metal Industries
  
• Envirotech
  
• Columbus Stainless Steel
  
• Iscor
  
• Mozal

• South African Mint
  
• Victory Timbers
  
• AE&CI
  
• Rand Water
  
• Western Transvaal Water Co.
  
• Hoechst
  
• Neyrtec
  
• Carlton Paper

• ICAL
  
• Steamtech
  
• Steam Installations
  
• Sasol I
  
• Rand Water

Petrochemical / chemicals

• Natref
  
• Heurty Petrochemical /Africa
  
• Sasol Chemical Industries

• Derek Meyer
  
• Wilson Bailey Holmes
  
• Nedcor

• Glaxo
  
• Hoechst

• South African Breweries
  
• Nestlé