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現在の単語数: 282語

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作成日: 2026/02/02 19:40

更新日: 2026/02/03 08:01

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- Japanese researchers successfully mined mud containing rare earth elements from a seabed 5,700 meters deep.
- The test, conducted by the research vessel Chikyu, proves the mining system works at significantly greater depths than previous trials.
- Future plans include increased mud extraction (350 tons daily), refining trials, and cost calculations for potential large-scale rare earth element production.

A: Hey! Did you hear about something cool happening with Japan’s technology?

B: No! What's up? Tell me!

A: Japanese scientists just mined mud from the *deepest* seabed ever! Like, seriously deep - 5,700 meters!

B: Wow! 5,700 meters? That's crazy! What’s in the mud?

A: Rare earth elements! You know, those important metals for electronics?

B: Oh, right! So, Japan wants to get them from the ocean floor?

A: Exactly! They used this special ship called Chikyu. It’s a research vessel.

B: So, they’ve been doing this for a while?

A: They tried something similar a few years ago, but this time it’s much deeper. It proves their system works really well even under a lot of pressure!

B: Amazing! When will they actually *use* this, you know? Make a lot of these elements?

A: Well, they'll do more tests first to separate the metals.  Next year, they’re planning to mine a *lot* of mud - like 350 tons a day!

B: That’s a lot! Where does all that mud go then?

A: To Minamitorishima first. They drain the water there before bringing it to the mainland.

B: Sounds complicated! When will we know if it’s all worth it?

A: They’ll have a full report by March 2028, with all the costs. Super interesting, huh?

B: Totally! Japan is really pushing this!

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