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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 Vereinigte Staaten (Click for more!)
Björn Voges Björn Voges Marketing-Manager, Greif-Velox Maschinenfabrik GmbH Deutschland (Click for more!)
