ISSN 0536-1028 (Print)              ISSN 2686-9853 (Online)  

Bogdan A. Akhpashev

 – PhD (Engineering), Associate professor, associate professor of the Department of Underground mining, School of Mining, Geology and Geotechnology, Siberian Federal University. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

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