The workers of the Kim Chaek Iron and Steel Complex have pushed ahead with the mass technical innovation movement to shorten the melting time and increase the output of molten iron per charge while waging a socialist emulation among shifts.

Thanks to their efforts, the pig iron production has increased 1.3 times and the rolled steel production 1.4 times as against last year.

The Hwanghae Iron and Steel Complex has steadily improved the operation method of oxygen heat blast furnace by introducing valuable technical innovation proposals.

The Chollima Steel Complex raised the operation rate of equipment by carrying out the technical upgrading of equipment and the manufacture of steel structures in a short span of time.

Innovative successes have been made at the Musan Mining Complex, the Chongjin Steel Plant, the Unryul Mine, the Jaeryong Mine, the Puryong Ferroalloy Factory and other units in charge of supplying raw materials and ferroalloy.