Renger Karin
Reschke George W.
Research Institute of Industrial Science & Technology
Research Institute of Industrial Science & Technology Incor
Research Institute of Industrial Science & Technology Incorporat
Ressources Minieres Pro-Or Inc.
Rettenbacher Gottfried
Reufer Franz
Reynolds James E.
RGC Mineral Sands
Rhoads Mark Alan
Rhodon Michel L.
Richer-Lafléche Marc
Richter Klaus-Jurgen
Rickman Holly C.
Riley Michael Francis
Rinker Franklin G.
Rio Tinto Brasil
Rivera Marco Antonio Caceres
Rizzo Henrique P.