This year, tens of reserve cutting faces have been provided amid the socialist emulation for increasing the tunneling speed.

Officials of the complex and coal mines are directing efforts to supplying in advance materials, electric trams and coal wagons needed for tunneling.

The tunneling workers of the Inpho Youth Coal Mine are taking the lead in the drive for building a belt pit and securing reserve cutting faces while raising the utilization rate of compressors and other equipment.

Similar successes are also made at the Namdok, Hoean and Phunggok youth coal mines.