Members of Kang Ho Yong Youth Shock Brigade and Kim Hyok Youth Shock Brigade under the Sunchon Area Youth Coal Mining Complex increased the number of blasting per shift and conducted active movement for helping the next shift, thereby increasing tunneling more than twice and fulfilling the national economic plans for two years.

Lots of youth shock brigades of the Pukchang Area Youth Coal Mining Complex, Tukjang Area Coal Mining Complex, Tokchon Area Coal Mining Complex, etc. have honored their yearly tunneling plan.

They have registered high tunneling records every day by ensuring that successive drilling and blasting are promptly followed by the transport of refuse.