1. Biohydrometallurgy & Microbiology, Institute of Bioscience, TU Bergakademie Freiberg, 09599 Freiberg, Germany
2. Grinding Solutions, Tresillian Business Park, Tresillian, Truro, Cornwall TR2 4HF, UK
3. Federal Institute for Geosciences and Natural Resources, 30655 Hannover, Germany
4. Keramik, Feuerfest und Verbundstoffe, TU Bergakademie Freiberg, 09599 Freiberg
5. Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures, 38124 Braunschweig, Germany