Necmettin MARAŞLI Erciyes University, Faculty of Sciences, Departmen Of Physics, Turkey Radu Sorin Mihai University of Petrosani, Romania Muddasar Khan CAU Kiel, Germany Hesam Hassan Nejad Oil and Gas Engineering (Research Area: Hydrometallurgy) , Memorial University of Technology, Canada Ovidiu Stefan Technical University of Cluj Napoca, Romania Abdolreza Yazdani-Chamzini Islamic Azad University, Iran Catalin Iancu Constantin Brâncusi University of Târgu-Jiu, Romania Dhananjai Verma Geological Survey of India, India Carla Iglesias Department of Natural Resources and Environmental Engineering, University of Vigo, Spain MANOJ KHANDELWAL Federation University Australia, Australia Robert Uberman AFM in Kraków, Poland Xiaoguang Yue Wuhan University of Technology, China Aydın Rusen Karamanoglu Mehmetbey University, Turkey Amin Bahrami Centro de Investigación y de Estudios Avanzados del IPN Unidad Saltillo, Mexico Amit Verma Department of Mining Engineering, Indian School of Mines, India Arkoprovo Biswas Indian Institute of Science Education and Research Bhopal, India ABERE Dare Victor National Metallurgical Development Centre, Jos, Nigeria