Björn Voges Björn Voges Marketing-Manager, Greif-Velox Maschinenfabrik GmbH Germany (Click for more!)
Helmut Mayer Helmut Mayer Director and Principal Engineer, Mayer International Group Pty. Ltd. Australia (Click for more!)
Eko Putranto Eko Putranto Head of Mechanical Engineering Departement, PT. Tambang Batubara Bukit Asam (Persero) (Click for more!)
Tads S. Golosinski Tads S. Golosinski Professor, Mining Engineering, University of Missouri-Rolla United States (Click for more!)