Driven by the hatred for the group which dared defame again the dignity of the DPRK supreme leadership, they put up such placards and posters at their worksites as "Shower fire of revenge on the Lee Myung Bak swarm of rats!" and "Wipe out the Lee Myung Bak swarm of rats from this land!"

Coal mines under the Pukchang Area Coal Mining Complex, including the Inpho Coal Mine, scored a record-high speed in tunneling.

The Kaechon Area Coal Mining Complex has channeled efforts into developing deep coal fields in Pongchon and Joyang coal mines, paving a way for drastically increased production.

Hukryong, Toksan and Ryongnam coal mines under the Kangdong Area Coal Mining Complex, abundant in deposits and boasted of good tunneling conditions, are over-fulfilling their daily quotas by giving full play to their existing capacity.

Chonnae and Myongchon area coal mining complexes have expanded mining fields through collective innovations.