The sea water of this generation is not too deep, only more than 300 meters.

Moreover, the ocean currents are relatively stable and there is no too fast turbulence.

After the robot was put down, it took only ten minutes to reach the bottom of the sea.

As soon as the robot landed, it stirred up a large area of ​​dust on the seabed.

This scene scared everyone, you must know that the robot is working under the sea.

The most feared situation is that the sea sand on the seabed is too soft.

Because of accidental care, the robot may be trapped.

If you really encounter that situation, it will be a big trouble.

Without sufficient focus, the robot will only sink deeper and deeper, and the losses will be huge.

Fortunately, after the sea sand was aroused this time, it fell down one after another.

Before this, the miner followed the instructions and did not dare to operate the robot to do anything.

After a moment, when the underwater vision improves, the first job of miners is to bow their heads.

I looked at the seasha that had not reached any place, but fortunately I just lost the robot's feet.

Then the miner operated the robot and took two steps before gradually feeling relieved.

It turns out that the sea sand here is very light in mass, so there is more floating sand on the seabed.

And where not deep under these floating sand is the strong seabed.

But this also aroused everyone's curiosity. What is going on? Why is the sea sand here so light?

Then after operating the undersea sonar and conducting some detection, we can figure out the situation.

It turned out that there was an active volcano on the bottom of the sea erupting dozens of nautical miles away from here.

The lava spewing from the volcano continues to vaporize and cool down on the seabed, which brings up countless volcanic ash.

These volcanic ash floated here along the ocean current.

After receiving this news, everyone was ecstatic.

Because these volcanic ash are good things!

Everyone knows that the Pacific Ocean has the most active volcanoes, while the land is Indonesia has the most active volcanoes.

Many islands in Indonesia, as long as they are volcanic islands, they are all densely covered with trees and water, plants and wind.

For example, the four major islands in Indonesia, including Kalimantan and Sulasiwei, are the most fertile and suitable for agriculture.

The other two large islands, such as Java and Medan, are relatively in a normal situation.

Although there are also dense rainforests, the land on those two islands is relatively barren. If crops are grown, even if they can grow, their quality and yield are very average.

And the reason for this is that there are many active volcanoes on Kalimantan and Sulasiway Island.

It often erupts, and while erupting, although it will cause a large amount of volcanic rock to eject, it will also eject a large amount of volcanic ash.

After these volcanic ash falls on the island, they will become fertile soil and replenish the land.

Make the land here more suitable for the growth of crops.

Although there are some volcanoes in Medan and Java, the eruptions are not as frequent as those on the other two islands.

The most important thing is that the volcanic ash sprayed will not take long before it falls, and will be washed away by thick rain and rush into the sea.

Therefore, the land here is red soil with similar soil structure to several provinces in southern my country, including Guangdong and Guangxi.

It is highly acidic, but the soil is not fertile enough. If you plant crops, the yield and quality are not good.

This is just volcanic ash on land, and the volcanic ash spewing out from the undersea volcano is even more amazing.

Because it will be sprayed out with a lot of minerals, and once it comes out, it will be quickly cooled by sea water.

Some minerals in the valley will also react with various substances in the sea water, so other substances will form.

Among them are rare earths, and especially high-grade rare earths containing very expensive metal elements.

Only then did everyone understand the purpose of coming here, the exploration ship asked everyone to come here.

Obviously, this is the only way for ocean currents after the volcanic eruption, and those ocean currents will sweep the volcanic ash into here.

Everyone doesn’t need to mine too much here, just pick up ready-made ones here.

After a while, the robot was hoisted up.

In addition, the robot also carried a sample bag with it, which contained various sea sand collected from under the water.

Chen Cheng and the others were immediately called to clean and maintain the robot.

The samples in the sample pack were quickly sent to the laboratory on board.

I waited for almost an hour and it was time for supper.

Finally, good news came out, and they bumped into treasure today.

The rare earths here are indeed very high-grade rare earths.

Because it contains a lot of scandium, indium, palladium, and other rare metals.

Now everyone is developing...

As soon as this news came out, Mr. Zhou from Harbin Institute of Technology was excited and Mr. Wang from Harbin Institute of Technology was rarely happy.

The two teachers even drank a lot of wine during supper.

He even muttered, and now he finally found a large amount of valuable minerals for the country.

As for Chen Cheng, although he was also happy, he didn't know what these mines could be used for.

Fortunately, he has a cell phone here, so he can use it as a child.

This investigation is amazing. It turns out that the uses of these metals are so great.

For example, metal indium, that thing is a special alloy material that can be used to make aircraft engine blades.

In this regard, we have only made major breakthroughs in recent years.

But we followed the old path, and we used titanium alloy materials and learned from the hairy bear.

And Americans have long used ultra-high nanomolecules to match materials.

Therefore, the aviation engine can achieve a lifespan of 30,000 hours and super stable characteristics.

And here, three thousand hours are a big mark.

Although the emergence of Spark Technology has helped our aircraft manufacturers and solved the problem of finishing.

However, Xinghuo Technology is not very brave to take action in the materials.

In this regard, we have to test our country's scientists' efforts.

We have just overcome the technology of rhenium alloy. As for this indium alloy, we have only heard of it, but we have not tried it.

Why? Because indium is really too few and it is very expensive.

Usually, the main production areas are concentrated in North and South America, and the control of this rare metal is very strict in the United States.

Even if we want to buy some, we can't buy them.

And now, we don’t have to buy it anymore. With these rare earths, we can finally manage enough.

Chen Cheng and the others may not know the value of this inconspicuous metal.

But the two teachers from Harbin Institute of Technology and Harbin Engineering know the wonderful uses of this metal very well.
Chapter completed!