Ugol’nikov Aleksandr Vladimirovich, PhD, Assistant Professor. Ural State Mining University. Ekaterinburg, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Ugryumov Aleksandr Nikolaevich, Dr, Professor. Ural State Mining University. Еkaterinburg, Russia.
Ushakov Yuriy Yur’evich, engineer, researcher. South Ural State University (National Research University). Chelyabinsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.