Falah, Hadi, BSc student of mineral processing, Department of Mining Engineering, Faculty of Engineering, Urmia University, Urmia – Iran.
Fallahi, Siavash, MSc Graduate, Department of Mining Engineering, Faculty of Engineering, University of Kurdistan, Sanandaj, Iran
Falshtynskyi, Volodymyr, Dnipro University of Technology
Faramaz, Arash
Farhadi, Khalil

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