Japan to Launch World's First Sustained Deep-Sea Rare Earth Mud Trial Mining off Minamitorishima in 2026

Published: Dec 25, 2025 11:32 (GMT+8)
[SMM Flash: Japan Initiates Trial Mining of Rare Earth-Rich Deep-Sea Mud off Minamitorishima] Japan is set to conduct a one-month trial mining operation for rare earth elements in the deep-sea waters surrounding the remote Minamitorishima. The trial will attempt to continuously extract rare earth-rich seabed mud from depths of approximately 6,000 meters below the sea surface, marking the world's first sustained mining test of rare earth mud ore at such depths. The trial is being led by the Japan Agency for Marine-Earth Science and Technology, with the operation area located approximately 1,900 kilometers southeast of Tokyo, Japan. The operational window is scheduled from January 11 to February 14, 2026. Currently, Japan has not set a specific mass production target for this deep-sea rare earth project but has outlined a phased development plan: if the trial is successful, the Japan Agency for Marine-Earth Science and Technology will launch a scaled demonstration mining operation in February 2027, with the mining capacity expected to maintain the trial's daily rate of 350 metric tons.

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