[Ferro-Alloys.com]  Sangdong Tungsten Mine Signals Korea’s Strategic Mineral Turning Point

The reopening of the Sangdong tungsten mine in Yeongwol, Gangwon Province, is reshaping the strategic meaning of Korea’s mineral industry. Once closed due to poor profitability and competition from low-cost Chinese supply, the mine has returned to the global spotlight as a key asset in the U.S.-China critical minerals rivalry.

The New York Times recently highlighted Sangdong as a central part of U.S. efforts to secure tungsten supplies. Tungsten is a critical material used in semiconductors, aerospace, missiles, armored vehicles and precision cutting tools. With China dominating global tungsten supply, the United States and its allies are moving to secure alternative sources.

Almonty Industries, which operates the mine, announced in March that it had completed Phase 1 development of the Sangdong project and was moving toward commercial operation. The company said the mine could supply around 40 percent of global tungsten demand outside China once fully operational.

The mine’s known deposit is estimated at around 58 million tons. Its annual concentrate production capacity is estimated at about 2,300 tons, with a large portion expected to be exported to the United States under supply agreements.

The significance goes beyond the reopening of a single mine. First, Korea is regaining a limited but meaningful position as a producer in the global critical minerals supply chain. Second, Korea could become a strategic partner in the U.S.-led reshaping of defense and semiconductor supply networks. Third, if processing and refining facilities are developed near Yeongwol, Korea could move beyond raw mineral production into higher-value strategic materials.

However, challenges remain. The mine is operated by a foreign company, and much of the early output is expected to go to the U.S. market. For Korea, simply having the mine on domestic soil is not enough. A policy framework may be needed to ensure stable domestic access for semiconductors, defense, batteries and precision machinery.

The Sangdong case is also drawing attention to other potential critical minerals in Korea. The Korea Institute of Geoscience and Mineral Resources has been strengthening exploration, resource evaluation and AI-based survey technologies for minerals such as lithium, nickel and rare earths, which are essential for batteries, semiconductors and electric vehicles.

Lithium is one of the most closely watched minerals. Korea depends heavily on imports for battery-grade lithium. KIGAM data show that detailed exploration and potential resource assessments have been conducted in lithium-bearing zones including Uljin and Jecheon. If domestic lithium resources prove commercially viable, they could improve the resilience of Korea’s battery supply chain.

Vanadium is another promising mineral. It is a key material for vanadium redox flow batteries, which are used in large-scale energy storage systems. Domestic studies have examined potential vanadium mineralization zones in areas such as Soyeonpyeongdo, Boleumdo, Yeoncheon, Hadong-Sancheong, Hongcheon and Yangyang.

Nickel is also strategically important because it improves the energy density of electric vehicle batteries. Korean researchers are studying nickel and other critical minerals as part of a broader resource security strategy. Even if domestic deposits are confirmed, commercial development will depend on grade, economic feasibility and environmentally acceptable extraction technologies.

Rare earths and molybdenum are also worth watching over the longer term. Rare earths are used in EV motors, wind turbines, advanced electronics and defense equipment, while molybdenum is important for specialty steel, alloys and semiconductor-related materials. Almonty has also referred to continued work related to the Sangdong molybdenum project.

The reopening of Sangdong could become a turning point in Korea’s resource policy. Korea has long been viewed as a country with limited natural resources but strong manufacturing capabilities. If domestic exploration, refining and advanced materials processing are combined, Korea could evolve into a supply-chain hub linking mineral security, materials technology and high-end manufacturing.

The real meaning of Sangdong is therefore not just tungsten output. It signals that Korea is beginning to treat critical minerals as a matter of national security and industrial sovereignty. To turn this opportunity into a durable national strategy, Korea will need domestic allocation mechanisms, environmental safeguards, local community benefits, refining investment and long-term exploration funding.

• [Editor:tianyawei]