Mustafayev Oybek Bobomuradovich, Rustam Umarhanovich Djuraev, & Abdixakimova Malika Amir qizi. (2022). IMPROVING OF THE EFFICIENCY OF CLEANING OF THE BOTTOM OF THE BOREHOLE FROM THE CRUSHED SLURRY ON THE BASIS OF IMPROVING OF THE CONSTRUCTION OF A THREE-BALLCHISEL. The American Journal of Engineering and Technology, 4(04), 79–91. https://doi.org/10.37547/tajet/Volume04Issue04-07