B. R. Rakishev, Head of the Chair, Professor, Doctor of Technical Science (KazNTU named by Satpaev K. I.); S. K. Moldabaev, Head of the Chair, Candidate of Technical Science, Zh. N. Khammetova, Senior Lecture, Ekibastuz EngineeringTechnical Institute named by Satpaev K. I.; G. E. Irgebaev, Chief Engineer, N. A. Shulaeva, Head of the Engineering Group, A. H. Syzdykov, Chief of the Department, “Maykuben-West” Ltd.