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 sci-tech sector has made notable achievements conducive to the economic development of the country and the improvement of the
January 02, 2026
The sci-tech sector has made notable achievements conducive to the economic development of the country and the improvement of the
The Autumn Sports Contest of Aged People was held at the Taekwon-Do Palace in the capital city of Pyongyang in October 2025. What
January 02, 2026
The Autumn Sports Contest of Aged People was held at the Taekwon-Do Palace in the capital city of Pyongyang in October 2025. What
The New Year 2026 has dawned. The Editorial Board extends warm greetings to you who have got familiar with our website. The
January 01, 2026
The New Year 2026 has dawned. The Editorial Board extends warm greetings to you who have got familiar with our website. The
The respected Comrade Kim Jong Un sent a congratulatory message to the officers and soldiers of the overseas operations units on D
January 01, 2026
The respected Comrade Kim Jong Un sent a congratulatory message to the officers and soldiers of the overseas operations units on D
Kim Jong Un , general secretary of the Workers’ Party of Korea and president of the State Affairs of the Democratic People’s
January 01, 2026
Kim Jong Un , general secretary of the Workers’ Party of Korea and president of the State Affairs of the Democratic People’s
The respected Comrade Kim Jong Un sent a congratulatory message to Ho Jong Man, chairman of the Central Standing Committee of the
January 01, 2026
The respected Comrade Kim Jong Un sent a congratulatory message to Ho Jong Man, chairman of the Central Standing Committee of the
A dance party of women’s union officials and members was held at the plaza of the Arch of Triumph in Pyongyang on December 30 to c
January 01, 2026
A dance party of women’s union officials and members was held at the plaza of the Arch of Triumph in Pyongyang on December 30 to c
Agricultural workers of the Wolji Farm in Anak County and the Churung Farm in Samchon County, South Hwanghae Province of the DPRK,
January 01, 2026
Agricultural workers of the Wolji Farm in Anak County and the Churung Farm in Samchon County, South Hwanghae Province of the DPRK,
Dance parties of youth and students took place across the DPRK on December 30 to celebrate the 14th anniversary of the respected
January 01, 2026
Dance parties of youth and students took place across the DPRK on December 30 to celebrate the 14th anniversary of the respected
A well-regulated nationwide system is in place in the DPRK for producing and supplying school uniforms and assessing their
December 31, 2025
A well-regulated nationwide system is in place in the DPRK for producing and supplying school uniforms and assessing their
The artistic motivational team of the Central Committee of the Union of Agricultural Workers of Korea performed at the Academy of
December 31, 2025
The artistic motivational team of the Central Committee of the Union of Agricultural Workers of Korea performed at the Academy of
Top ten IT model units of 2025 have been selected. Those selected are the Chollima Tile Factory, Sinuiju Cosmetics Factory,
December 31, 2025
Top ten IT model units of 2025 have been selected. Those selected are the Chollima Tile Factory, Sinuiju Cosmetics Factory,
A meeting of workers and members of the General Federation of Trade Unions of Korea took place at the Central Hall of Workers on
December 31, 2025
A meeting of workers and members of the General Federation of Trade Unions of Korea took place at the Central Hall of Workers on
The recent 13th Plenary Meeting of the Eighth Central Committee of the Workers’ Party of Korea reviewed the implementation of
December 31, 2025
The recent 13th Plenary Meeting of the Eighth Central Committee of the Workers’ Party of Korea reviewed the implementation of
The Academy of Pedagogical Science is conducting extensive research to give students advanced education as the second programme
December 31, 2025
The Academy of Pedagogical Science is conducting extensive research to give students advanced education as the second programme
Jonjin Senior Middle School newly built in Pyongyang’s Rangnang District is an all-in-one educational institution in which
December 31, 2025
Jonjin Senior Middle School newly built in Pyongyang’s Rangnang District is an all-in-one educational institution in which
Villages of the Konggwi Vegetable Farm in Kanggye City, and the Kaewon Farm in Wiwon County, Jagang Province of the DPRK,
December 31, 2025
Villages of the Konggwi Vegetable Farm in Kanggye City, and the Kaewon Farm in Wiwon County, Jagang Province of the DPRK,
Considerable achievements have been made in the work for land and environment protection this year. The Eleventh Plenary Meeting
December 30, 2025
Considerable achievements have been made in the work for land and environment protection this year. The Eleventh Plenary Meeting
According to the decisions made at the Eighth Congress of the Workers’ Party of Korea, projects for readjustment and
December 30, 2025
According to the decisions made at the Eighth Congress of the Workers’ Party of Korea, projects for readjustment and
The respected Comrade Kim Jong Un shows boundless affection to the service personnel regarding them as his own beloved sons and
December 30, 2025
The respected Comrade Kim Jong Un shows boundless affection to the service personnel regarding them as his own beloved sons and
More Articles
