Pyongyang, May 30 (KCNA) -- The mining industrial sector of the DPRK has boosted the production of minerals and nonferrous metals by dint of its scientific and technical force.

The Munphyong Smeltery is laying a production foundation while ensuring the smooth operation of newly-built electric furnace.

The Manpho Smeltery mainly concluded the establishment of a sulfuric acid production line to lay a prospective production foundation.

The Hyesan Youth Mine has made progress in increasing the mineral production and the degree of concentrating recovery by introducing inventions to raise the operation rate of equipment and remodeling the air suction opening of the air power loader.

The Unpha Mine explored and introduced ways for ensuring the full operation of transport and drainage systems. Meanwhile, the Inphyong Youth Mine and the Changdo Mine have strengthened their technical forces and made use of technical achievements. -0-