Coal mines across the country have introduced over 1,000 technical innovations conducive to increasing the production.

The Chonsong Youth Coal Mine under the Sunchon Area Youth Coal Mining Complex has further sped up tunneling by applying a new blasting method, while lowering the consumption unit of blasting agents.

The Inpho Youth Coal Mine under the Pukchang Area Youth Coal Mining Complex introduced a new blasting fume neutralizer to extend the heading hours.

A unit under the Anju Area Coal Mining Complex, Tukjang Coal-mining Machine Factory and other units have produced and sent hydraulic multi-purpose excavating machines and new-type compressors to collieries.

A unit under the Kujang Area Coal Mining Complex established the production process of screw borer.

Meanwhile, hundreds of valuable technical innovations have been introduced into the production at Hamnam, Kangdong and Chonnae area coal mining complexes.