Ko Kyong Dal, who was born into a family of day laborer before the liberation of the country, devoted his wisdom and enthusiasm to the work for training scientific and technological talents and developing the metal industry of the country for decades.

During these days, he pioneered several subjects of special study, wrote many textbooks and reference books and brought up tens of winners of academic degrees and titles.

Jong Sun Won has contributed to the development of the country's fishery for a long time.

He created hundreds of hectares of seaweed culture grounds and increased the production of fish and seaweed every year defying natural conditions.

O Sun Jin has worked as teacher and senior coach of weightlifting, bringing up famous sports including those honored with titles of Labor Hero, People's Athlete and Merited Athlete.