They made contribution to developing embankment project method at the Taegyedo tideland and plasma technology by laser and putting on a modern basis the production process of building materials relying on locally available raw materials.

Certificates of scientific and technological innovation prize were awarded to scientists, technicians and officials of Pyongyang College of Medicine under Kim Il Sung University and the Kujang Area Coal Mining Complex.

An awarding ceremony took place at the People's Palace of Culture on Wednesday.