The scientist succeeded in inventing active additives of great significance in developing the economy and improving the standard of the people's living.

She has worked hard for more than two decades, prompted by her single desire to contribute to the prosperity of the country with scientific research achievements.

The above-said invention made it possible to use the low-grade anthracite and lean coal as fuel for industrial purposes and heating houses.

An awarding ceremony was held in Wonsan City, Kangwon Province on Wednesday.