Korean-style Hydraulic Rotary Drill Developed in DPRK
Pyongyang, January 20 (KCNA) -- According to Rodong Sinmun, the Mining Engineering Institute of the Academy of Coal Mining Science
January 20, 2026
Pyongyang, January 20 (KCNA) -- According to Rodong Sinmun, the Mining Engineering Institute of the Academy of Coal Mining Science




