On the morning of New Year’s Day in Juche 111 (2022), the respected Comrade Kim Jong Un had a meaningful photo taken with merited persons and labour innovators. Among them was Hyon Ok Ju, manager of the thermal insulation building materials branch factory of the Pyongyang Thermal Power Station.
Her name in the power station reminds every employee of insulating brick first. Because she, though a married woman, made quality insulating brick by herself and contributed to the development of the country’s electric power industry.
For years, she groped for a way to produce insulating brick at her factory. And finally one day she hit upon an idea as she saw white soot from the thermal power station.
“Wouldn’t it be possible to make insulating block from that white soot and locally-available clay, which is able to boost power generation while preventing environmental pollution?” she thought.
She made up her mind to undertake that ambitious research project. But it was not a royal road.
Busy as she was with her business affairs, she developed technical specifications of insulating brick one by one and made painstaking efforts to resolve problems arising in making it.
Sometimes she hesitated and despaired due to the repeated failure. But she got up and eventually succeeded in making the first trial products with help from scientists, technicians and workers of the power station.
Later, an insulating brick production process based on white soot was set up at her branch factory. For its better refractoriness and insulating qualities than the previous ones, her insulating brick helped further increase the per-generator output.
And she intensified the research into improving technical specifications of the brick to raise the combustion efficiency of boilers.
Now, she continues her journey of devotion to keep the bright light at the windows of all families.
More From Naenara (En)
The provincial building materials exhibition-2025 opened with due ceremony at the Sci-Tech Complex on December 9. Presented to the
December 11, 2025
The provincial building materials exhibition-2025 opened with due ceremony at the Sci-Tech Complex on December 9. Presented to the
Proud entities visually showing the rapid development of the socialist countryside flourishing day by day are being built one
December 11, 2025
Proud entities visually showing the rapid development of the socialist countryside flourishing day by day are being built one
Associate Professor Choe Ryon, PhD, teaches at the Faculty of Korean Linguistics of Kim Il Sung University. She won the WIPO
December 11, 2025
Associate Professor Choe Ryon, PhD, teaches at the Faculty of Korean Linguistics of Kim Il Sung University. She won the WIPO
The secretary office of the premier of the Cabinet of the Democratic People’s Republic of Korea on December 10 informed the
December 11, 2025
The secretary office of the premier of the Cabinet of the Democratic People’s Republic of Korea on December 10 informed the
Choe Son Hui, minister of Foreign Affairs of the Democratic People’s Republic of Korea, No Kwang Chol, minister of National
December 11, 2025
Choe Son Hui, minister of Foreign Affairs of the Democratic People’s Republic of Korea, No Kwang Chol, minister of National
Pak Jong Chon and Jo Chun Ryong, secretaries of the Central Committee of the Workers’ Party of Korea, Kim Jae Ryong, department
December 11, 2025
Pak Jong Chon and Jo Chun Ryong, secretaries of the Central Committee of the Workers’ Party of Korea, Kim Jae Ryong, department
Mt Myohyang located in the northwestern part of the DPRK is one of the celebrated mountains. It is famous for its superb scenery.
December 10, 2025
Mt Myohyang located in the northwestern part of the DPRK is one of the celebrated mountains. It is famous for its superb scenery.
Agricultural workers moved with pleasure into modern houses newly built in farm villages of Jagang Province as part of the perfect
December 10, 2025
Agricultural workers moved with pleasure into modern houses newly built in farm villages of Jagang Province as part of the perfect
Rope-skipping is one of the Korean children's folk games that is played by skipping over a moving or fixed rope in different ways
December 10, 2025
Rope-skipping is one of the Korean children's folk games that is played by skipping over a moving or fixed rope in different ways
Choe Son Hui, minister of Foreign Affairs of the Democratic People’s Republic of Korea, sent a message of condolence to Sergei
December 10, 2025
Choe Son Hui, minister of Foreign Affairs of the Democratic People’s Republic of Korea, sent a message of condolence to Sergei
The royal jelly goods produced by the Chilgol Songdo Factory are gaining popularity among the customers. Lately the research team
December 10, 2025
The royal jelly goods produced by the Chilgol Songdo Factory are gaining popularity among the customers. Lately the research team
In December last year, when the inauguration ceremony of the Sinpho City Offshore Farm in South Hamgyong Province was held, the re
December 09, 2025
In December last year, when the inauguration ceremony of the Sinpho City Offshore Farm in South Hamgyong Province was held, the re
Agricultural workers of the Taedong Farm in Tongchang County and the Namha Farm in Pyoktong County, North Phyongan Province, have
December 09, 2025
Agricultural workers of the Taedong Farm in Tongchang County and the Namha Farm in Pyoktong County, North Phyongan Province, have
The respected Comrade Kim Jong Un leads the revolution and construction by inspiring the entire population through the socialist
December 09, 2025
The respected Comrade Kim Jong Un leads the revolution and construction by inspiring the entire population through the socialist
The Yakjon Farm in Sukchon County, South Phyongan Province, is facelifting itself. The first year when the programme for the rural
December 09, 2025
The Yakjon Farm in Sukchon County, South Phyongan Province, is facelifting itself. The first year when the programme for the rural
The Hamhung Grand Theatre was remodelled in South Hamgyong Province of the DPRK. The grand theatre with a total floor space of
December 08, 2025
The Hamhung Grand Theatre was remodelled in South Hamgyong Province of the DPRK. The grand theatre with a total floor space of
Modern villages have sprung up at the Hungsang Farm in Ragwon County and the Township Farm in Kumya County, South Hamgyong
December 08, 2025
Modern villages have sprung up at the Hungsang Farm in Ragwon County and the Township Farm in Kumya County, South Hamgyong
The Mindulle Paper Mill has been remodelled. The mill, a labour-, water- and plot-saving enterprise, is furnished with various
December 07, 2025
The Mindulle Paper Mill has been remodelled. The mill, a labour-, water- and plot-saving enterprise, is furnished with various
South Hamgyong Province of the DPRK has remodelled the Hamhung Koryo Medicine Pharmaceutical Factory. The factory, furnished with
December 07, 2025
South Hamgyong Province of the DPRK has remodelled the Hamhung Koryo Medicine Pharmaceutical Factory. The factory, furnished with
A black swan breeding base has been newly built at the Anju Duck Farm in South Phyongan Province, the DPRK. The construction of
December 07, 2025
A black swan breeding base has been newly built at the Anju Duck Farm in South Phyongan Province, the DPRK. The construction of
More Articles
