Our collaborators and/or coinvestigators are as follows:

• Dr. J. Kerres, Team Leader, Membrane Polymer Synthesis, HI-ERN, Erlangen, Germany
• Dr. V. Atanasov, Group Leader, Stuttgart University, Germany
• Dr. OSL Bruinsma, Managing Director, Bruinsma Solutions, South Africa 
• Prof. M. Dry, Managing Director, Arithmetek, Canada
• Mr. P. Chennells, Managing Director, Arxo Metals, South Africa 
• Mr. L. Matthews, Managing Director Special Projects, Arxo Metals, South Africa 
• Mr. M. Brighton, Metallurgist at Tharisa Minerals, South Africa
• Mrs. I.D. Natha, Metallurgist at Tharisa Limited, South Africa 
• Mr. E. Munnik, Managing Director, Minemet, South Africa 
• Mr. A. Coates, Managing Director, Minemet, South Africa