Abd Elmajeed, Ahmed, University of Assiut, Faculty of Engineering, Mining and Metallurgy Eng. Dept.
Abd-Elwahed, Mohamed S. , Department of Mechanical Engineering, King Abdulaziz University, Jeddah, KSA
Abdel-Khalek, Nagui
Abdelghafar, Khaled, Cairo University, Faculty of Engineering, Department of Mining, Petroleum, and Metallurgical Engineering
Abdelhaffez, Gamal, Mining Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah, KSA

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