Sublevel Mining System with Artificial Pillars Made of a Hardening Backfills for The Development of Veins in Difficult Geomechanical Conditions. Texa. Jour. of Mutl. Stud. [Internet]. 2021 Dec. 12 [cited 2026 Apr. 28];3:98-104. Available from: https://zienjournals.com/index.php/tjm/article/view/394