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)
Grand construction began in Hwaphyong, Phyonggang, Riwon, Myonggan and Samsu counties of the DPRK to build regional-industry
February 11, 2026
Grand construction began in Hwaphyong, Phyonggang, Riwon, Myonggan and Samsu counties of the DPRK to build regional-industry
The 11th National Pencil Drawing Festival opened in the DPRK to celebrate the 84th birth anniversary of Chairman Kim Jong Il .
February 11, 2026
The 11th National Pencil Drawing Festival opened in the DPRK to celebrate the 84th birth anniversary of Chairman Kim Jong Il .
The Ministry of Land and Maritime Transport Sports Club has a general aquatic sports training hall and hostel for athletes on the
February 11, 2026
The Ministry of Land and Maritime Transport Sports Club has a general aquatic sports training hall and hostel for athletes on the
The Eighth Congress of the Workers’ Party of Korea held in January 2021 set forth a line on building up the national defence
February 11, 2026
The Eighth Congress of the Workers’ Party of Korea held in January 2021 set forth a line on building up the national defence
The architectural materials institute under the State Academy of Sciences has recently developed a new paint for preventing metals
February 11, 2026
The architectural materials institute under the State Academy of Sciences has recently developed a new paint for preventing metals
The Song and Dance Ensemble of the Ministry of National Defence of the DPRK gave a music and dance performance at the Ponghwa Art
February 10, 2026
The Song and Dance Ensemble of the Ministry of National Defence of the DPRK gave a music and dance performance at the Ponghwa Art
Greeting Army Founding Day, a proud holiday of socialist Korea, all the service personnel and people pay the highest tribute to
February 10, 2026
Greeting Army Founding Day, a proud holiday of socialist Korea, all the service personnel and people pay the highest tribute to
Officials, service personnel, working people, youth and students in the DPRK visited the statues of President Kim Il Sung and
February 10, 2026
Officials, service personnel, working people, youth and students in the DPRK visited the statues of President Kim Il Sung and
Regional construction for this year has been launched across the DPRK in a three-dimensional way and on a full scale,
February 10, 2026
Regional construction for this year has been launched across the DPRK in a three-dimensional way and on a full scale,
Dance parties of youth and students were held in the DPRK on February 8, the 78th anniversary of the founding of the Korean
February 10, 2026
Dance parties of youth and students were held in the DPRK on February 8, the 78th anniversary of the founding of the Korean
A dance party of women’s union officials and members was held at the plaza of the Arch of Triumph in Pyongyang on February 8, the
February 10, 2026
A dance party of women’s union officials and members was held at the plaza of the Arch of Triumph in Pyongyang on February 8, the
This year’s February 8 marks the 78th anniversary of the founding of the Korean People’s Army, the revolutionary regular armed
February 10, 2026
This year’s February 8 marks the 78th anniversary of the founding of the Korean People’s Army, the revolutionary regular armed
All the people and service personnel of the DPRK significantly celebrated the 78th founding anniversary of the Korean People’s
February 10, 2026
All the people and service personnel of the DPRK significantly celebrated the 78th founding anniversary of the Korean People’s
People’s delegations, composed of Party and government officials and officials of ministries, national agencies and regional Party
February 10, 2026
People’s delegations, composed of Party and government officials and officials of ministries, national agencies and regional Party
Preparations are now under way in the DPRK to successfully hold the Ninth Congress of the Workers’ Party of Korea, which will
February 09, 2026
Preparations are now under way in the DPRK to successfully hold the Ninth Congress of the Workers’ Party of Korea, which will
Groundbreaking ceremonies of construction projects for this year for the regional development policy were held in Sinphyong and
February 09, 2026
Groundbreaking ceremonies of construction projects for this year for the regional development policy were held in Sinphyong and
Ground-breaking ceremonies took place respectively in Songhwa County, a granary on the west coast, Musan County and Taean District
February 08, 2026
Ground-breaking ceremonies took place respectively in Songhwa County, a granary on the west coast, Musan County and Taean District
The Ice Sculpture Festival-2026 in celebration of February 16, birthday of Chairman Kim Jong Il , is now going on with splendour
February 08, 2026
The Ice Sculpture Festival-2026 in celebration of February 16, birthday of Chairman Kim Jong Il , is now going on with splendour
The 2026 winter aesthetic symposium in the field of land and environment protection took place at the Sci-Tech Complex in
February 08, 2026
The 2026 winter aesthetic symposium in the field of land and environment protection took place at the Sci-Tech Complex in
A KCNA journalist met officials of the organizing committee of the Third People’s Art Festival for Celebrating February 16, birthd
February 08, 2026
A KCNA journalist met officials of the organizing committee of the Third People’s Art Festival for Celebrating February 16, birthd
More Articles
