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Jürgen Opdenhoff Jürgen Opdenhoff Managing Director, Opdenhoff Technologie Deutschland (Click for more!)
Tads S. Golosinski Tads S. Golosinski Professor, Mining Engineering, University of Missouri-Rolla Vereinigte Staaten (Click for more!)
Eko Putranto Eko Putranto Head of Mechanical Engineering Departement, PT. Tambang Batubara Bukit Asam (Persero) (Click for more!)
Helmut Mayer Helmut Mayer Director and Principal Engineer, Mayer International Group Pty. Ltd. Australien (Click for more!)