Deep dive: Japan's rare earth mining trial

Test near remote island marks a first in ultra-deep critical mineral recovery.

Japan is set to commence a trial representing the world's deepest attempt at rare earth element (REE) extraction from the ocean floor. Scheduled for January 2026, the operation will involve the retrieval of mineral-rich sediment from a depth of 5,500 meters (3.4 miles), marking an unprecedented milestone in subsea minin...