The quarterly coal output quota was hit at 101 percent nationwide. Coal production increased sharply at the Kaechon, Tokchon and Kangdong area coal-mining complexes.

The Kim Chaek Iron and Steel Complex, a giant steel maker, finished the quarterly pig production plan at 105 percent.

The Taean Heavy Machine Complex, a major generator producer, topped the plan for March by 30 percent. The same is true for other machinery makers, including Rakwon and Ryongsong Machine complexes.

A production upswing was also seen in the timber industry, with its quarterly plan topped at 100.5 percent. In particular, forestry stations under the Jagang Provincial Forestry Management Bureau made fresh innovations in logging.