How an abandoned mine became Korea’s moon lab
In March, technologies were put through a live demonstration inside an abandoned mine, where the rover and its support equipment ran under field-like conditions.
Image: KIGAM
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An abandoned mine has reopened its doors–not for miners, but for scientists.
The Korea Institute of Geoscience and Mineral Resourcesis converting a former mine shaft in Taebaek City into a research facility to test and validate technologies for extracting lunar resources. The plan involves partnering with Taebaek City to transform the site into a large-scale demonstration complex for space technologies.
Taebaek City was once renowned for its coal production. When coal dominated South Korea’s energy mix, the city supplied roughly 30 percent of the nation’s total output and earned the nickname “black-gold city.”
But as the energy landscape shifted, its mines shut down one by one. This closure led the city to look for new paths to revitalization. Scientists saw potential in these abandoned shafts, redefining them as experimental sites that can simulate lunar-like conditions.
Dr. Kim Kyeong-ja, director of KIGAM’s Space Resources Exploration and Utilization Center, explained why the team selected an abandoned mine for the new research and demonstration facility: “Subsurface regions and caves on the moon are relatively shielded from radiation and meteorite strikes, so they are leading candidates for future lunar bases. An abandoned mine on Earth can replicate those conditions and serve as an ideal proving ground for the technologies we need,” she said. “A coal mine’s perpetual darkness and stable temperature closely match the sunless environment beneath the lunar surface.”
Dr. Kim also stressed the cost-effectiveness of reusing existing infrastructure. “If we didn’t have a site like this, we’d have to build a dedicated facility, and that would consume a great deal of energy and resources. Because the essential structures are already in place and can be adapted with minimal modification, we can conserve both funds and materials.”
KIGAM’s rover, equipped with its own Laser-Induced Breakdown Spectroscopysystem, is purpose-built to survey and map resources on the Moon. Image: KIGAM
Scientists Dream of Mining Lunar Resources
Researchers working in the mine will focus on demonstrating a range of technologies for extracting and utilizing resources directly from the moon.
The moon is believed to hold sizable quantities of key resources that are scarce on Earth. A prime example is helium-3, often cited as a potential future clean energy source. Fusion reactions that use deuterium and helium-3 generate virtually no radioactive waste, making helium-3 a potential source of environmentally friendly power. While only trace amounts exist on Earth, the moon is estimated to contain more than a million tons.
A KIGAM official explained, “Helium-3 is lightweight and takes up little space, so a large quantity can be shipped from the moon in a relatively small volume compared with metallic ores, making it highly economical. It is the resource we should prioritize returning to Earth.”
Rare-earth elements are another set of resources potentially available on the moon. They are vital to sectors such as semiconductors, displays, and batteries. These elements are unevenly distributed on Earth, yet they are thought to be relatively plentiful on the moon. KIGAM says it is working to develop technologies for locating and extracting rare-earth deposits.
Before such minerals can be recovered on the moon, the underlying technologies must be proven in environments that mimic lunar conditions. KIGAM is partnering with multiple domestic institutes to design advanced equipment and methods for lunar exploration and extraction.
Last March, the institute demonstrated several key in-situ resource-development devices inside the abandoned Hamtae mine shaft. The event was announced as the world’s first use of an abandoned mine as a testbed for rigorously assessing the feasibility and safety of lunar resource-extraction operations.
One highlight was a lunar rover designed to traverse the lunar surface and analyze soil. The vehicle can scout the terrain while simultaneously drilling underground to collect samples. Another KIGAM prototype rover carries a Laser-Induced Breakdown Spectroscopysystem.
The institute has also engineered a device that heats regolith to extract and collect valuable elements. Image: KIGAM
LIBS can identify the composition and concentration of more than 50 elements in real time. It does so by blasting the soil with a powerful laser and analyzing the resulting plasma light.
During a live demo, the rover drove over a mock lunar landscape, collected soil, and used LIBS to analyze its makeup. In the future, LIBS is expected to work alongside a Gamma-Ray Spectrometerto build comprehensive maps of lunar resources. KIGAM has already produced an elemental map of the lunar surface using the KGRS on Danuri, South Korea’s first lunar orbiter.
Beyond mining, work is accelerating on In-Situ Resource Utilizationtechnologies that would enable astronauts to generate vital supplies on the moon. At the mine, KIGAM demonstrated a resource extractor built to remove essentials such as water or oxygen from lunar regolith.
The device concentrates solar energy to heat the soil to extreme temperatures, breaking it down at the molecular level and releasing usable materials. During the test, it detected hydrogen, oxygen, and argon in real time. Dr. Kim noted, “With this technology, we can identify any substance with an atomic weight under 200.”
Many other core technologies essential to space resource development will also be showcased at the site.
They range from CubeSats that survey minerals and provide communications in low lunar orbit to heat-pipe reactors for continuous probe power and wireless power-transfer systems on the surface.
Partners include the Korea Atomic Energy Research Institute, Korea Electrotechnology Research Institute, Korea Research Institute of Standards and Science, and Korea Institute of Energy Research.
However, researchers caution that replicating the lunar environment inside the mine still requires considerable effort. A KIGAM official explained, “We are still on Earth, and the differences start with gravity.” They added, “Our aim is to make the environment even closer to real lunar conditions by installing zero-gravity chambers or vacuum pumps in the center.”
KIGAM intends to finish developing roughly 10 major pieces of exploration equipment by 2029 in partnership with government-funded institutes and private firms.
Dr. Lee Pyeong-koo, president of KIGAM, said: “I find it profoundly gratifying that at the very place where we once mined the coal that fueled our nation’s economic growth, we are now embarking on research to bring helium-3 from the moon to Earth, potentially as a fusion fuel by 2100.”
The story was produced in partnership with our colleagues at Popular Science Korea.
#how #abandoned #mine #became #koreas
How an abandoned mine became Korea’s moon lab
In March, technologies were put through a live demonstration inside an abandoned mine, where the rover and its support equipment ran under field-like conditions.
Image: KIGAM
Get the Popular Science daily newsletter💡
Breakthroughs, discoveries, and DIY tips sent every weekday.
An abandoned mine has reopened its doors–not for miners, but for scientists.
The Korea Institute of Geoscience and Mineral Resourcesis converting a former mine shaft in Taebaek City into a research facility to test and validate technologies for extracting lunar resources. The plan involves partnering with Taebaek City to transform the site into a large-scale demonstration complex for space technologies.
Taebaek City was once renowned for its coal production. When coal dominated South Korea’s energy mix, the city supplied roughly 30 percent of the nation’s total output and earned the nickname “black-gold city.”
But as the energy landscape shifted, its mines shut down one by one. This closure led the city to look for new paths to revitalization. Scientists saw potential in these abandoned shafts, redefining them as experimental sites that can simulate lunar-like conditions.
Dr. Kim Kyeong-ja, director of KIGAM’s Space Resources Exploration and Utilization Center, explained why the team selected an abandoned mine for the new research and demonstration facility: “Subsurface regions and caves on the moon are relatively shielded from radiation and meteorite strikes, so they are leading candidates for future lunar bases. An abandoned mine on Earth can replicate those conditions and serve as an ideal proving ground for the technologies we need,” she said. “A coal mine’s perpetual darkness and stable temperature closely match the sunless environment beneath the lunar surface.”
Dr. Kim also stressed the cost-effectiveness of reusing existing infrastructure. “If we didn’t have a site like this, we’d have to build a dedicated facility, and that would consume a great deal of energy and resources. Because the essential structures are already in place and can be adapted with minimal modification, we can conserve both funds and materials.”
KIGAM’s rover, equipped with its own Laser-Induced Breakdown Spectroscopysystem, is purpose-built to survey and map resources on the Moon. Image: KIGAM
Scientists Dream of Mining Lunar Resources
Researchers working in the mine will focus on demonstrating a range of technologies for extracting and utilizing resources directly from the moon.
The moon is believed to hold sizable quantities of key resources that are scarce on Earth. A prime example is helium-3, often cited as a potential future clean energy source. Fusion reactions that use deuterium and helium-3 generate virtually no radioactive waste, making helium-3 a potential source of environmentally friendly power. While only trace amounts exist on Earth, the moon is estimated to contain more than a million tons.
A KIGAM official explained, “Helium-3 is lightweight and takes up little space, so a large quantity can be shipped from the moon in a relatively small volume compared with metallic ores, making it highly economical. It is the resource we should prioritize returning to Earth.”
Rare-earth elements are another set of resources potentially available on the moon. They are vital to sectors such as semiconductors, displays, and batteries. These elements are unevenly distributed on Earth, yet they are thought to be relatively plentiful on the moon. KIGAM says it is working to develop technologies for locating and extracting rare-earth deposits.
Before such minerals can be recovered on the moon, the underlying technologies must be proven in environments that mimic lunar conditions. KIGAM is partnering with multiple domestic institutes to design advanced equipment and methods for lunar exploration and extraction.
Last March, the institute demonstrated several key in-situ resource-development devices inside the abandoned Hamtae mine shaft. The event was announced as the world’s first use of an abandoned mine as a testbed for rigorously assessing the feasibility and safety of lunar resource-extraction operations.
One highlight was a lunar rover designed to traverse the lunar surface and analyze soil. The vehicle can scout the terrain while simultaneously drilling underground to collect samples. Another KIGAM prototype rover carries a Laser-Induced Breakdown Spectroscopysystem.
The institute has also engineered a device that heats regolith to extract and collect valuable elements. Image: KIGAM
LIBS can identify the composition and concentration of more than 50 elements in real time. It does so by blasting the soil with a powerful laser and analyzing the resulting plasma light.
During a live demo, the rover drove over a mock lunar landscape, collected soil, and used LIBS to analyze its makeup. In the future, LIBS is expected to work alongside a Gamma-Ray Spectrometerto build comprehensive maps of lunar resources. KIGAM has already produced an elemental map of the lunar surface using the KGRS on Danuri, South Korea’s first lunar orbiter.
Beyond mining, work is accelerating on In-Situ Resource Utilizationtechnologies that would enable astronauts to generate vital supplies on the moon. At the mine, KIGAM demonstrated a resource extractor built to remove essentials such as water or oxygen from lunar regolith.
The device concentrates solar energy to heat the soil to extreme temperatures, breaking it down at the molecular level and releasing usable materials. During the test, it detected hydrogen, oxygen, and argon in real time. Dr. Kim noted, “With this technology, we can identify any substance with an atomic weight under 200.”
Many other core technologies essential to space resource development will also be showcased at the site.
They range from CubeSats that survey minerals and provide communications in low lunar orbit to heat-pipe reactors for continuous probe power and wireless power-transfer systems on the surface.
Partners include the Korea Atomic Energy Research Institute, Korea Electrotechnology Research Institute, Korea Research Institute of Standards and Science, and Korea Institute of Energy Research.
However, researchers caution that replicating the lunar environment inside the mine still requires considerable effort. A KIGAM official explained, “We are still on Earth, and the differences start with gravity.” They added, “Our aim is to make the environment even closer to real lunar conditions by installing zero-gravity chambers or vacuum pumps in the center.”
KIGAM intends to finish developing roughly 10 major pieces of exploration equipment by 2029 in partnership with government-funded institutes and private firms.
Dr. Lee Pyeong-koo, president of KIGAM, said: “I find it profoundly gratifying that at the very place where we once mined the coal that fueled our nation’s economic growth, we are now embarking on research to bring helium-3 from the moon to Earth, potentially as a fusion fuel by 2100.”
The story was produced in partnership with our colleagues at Popular Science Korea.
#how #abandoned #mine #became #koreas
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