Kurbonov Oybek Muhammadqulovich, To’xtashev Alisher Baxodirovich, Istamov Zafarjon Vohid o’g’li and Abdixakimova Malika Amir qizi 2025. CALCULATION OF ECONOMIC EFFICIENCY OF USING VARIABLE FREQUENCY DRIVE IN PUMPING UNITS IN UNDERGROUND LEACHING TECHNOLOGY OF MINERAL RESOURCES. Web of Discoveries: Journal of Analysis and Inventions. 3, 3 (Mar. 2025), 73–78.