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Japan will test rare-earth mud mined from deep seabed

The government-backed project's head announced on Tuesday that Japan will test mine rare-earth rich mud off Minamitori Island in the deep oceanbed, 1,900 km (1,180 mi) southeast of Tokyo.

This will be the first time in history that rare-earth mud has been continuously lifted from a depth around 6,000 metres onto a vessel. Tokyo and its Western allies are seeking stable supplies of vital minerals as China, the world's largest supplier of rare-earth minerals, tightens up export controls.

Shoichi Ishii is the program director for the Cabinet Office’s national platform?for innovative ocean development. He told reporters that one of their?missions was to create a supply chain of domestically produced rare Earths in order to guarantee a?stable and reliable supply of minerals vital to industry. As part of its efforts to improve maritime and economic security, the Japanese government has pushed ahead with a major national project.

The test in January will be focused on connecting the deep sea mining system, and confirm its ability to lift up to 350 metric tonnes of rare-earth-mud per day. The environmental impact will be monitored onboard the ship and?on the seabed during the entire operation.

A production target has not been set. However, if the trial is successful, it will be conducted at full scale in February 2027.

Ishii stated that the government-funded project spent around 40 billion yen ($256 millions) since 2018. However, estimated reserves were not disclosed.

Ishii said that on June 7, a Chinese 'naval fleet' entered Japanese waters while their research vessel conducted rare earth surveys in Japan's Exclusive Economic Zone (EEZ) surrounding Minamitori Island between May 27 and June 25.

He said: "We are deeply disturbed by the intimidatory actions taken against us, even though our activities were limited to surveys of seabed resources within our EEZ."

(source: Reuters)