Zhang Nan was exposed to a large number of tin ingots when he was a purchaser in the Materials Bureau, but those were 25 kilograms per ingot, plus or minus one kilogram, but his brother-in-law Xiang Weirong had a tin ingot at home, which he brought back from Yunnan Province in the 70s, and the weight was 37 kilograms.

This will Guan Xingquan is looking at one of the tin ingots that he fished up, "It's almost the same as the one in the squad leader's house, dead and sinking!"

Hearing this, Zhang Nan thought of something and said with a smile: "Brother Guan, I heard my brother-in-law say that you got that thing back with him, but it was regarded by the conductor as a secret escort mission?"

Xiang Weirong's family had always had a 37-kilogram pure tin ingot, and Zhang Nan's memory of selling it to the head of a small township collective enterprise in the 80s was that the supply of tin ingots was insufficient, and some small enterprises without supply indicators even bought a few kilograms of pure tin at a time.

Which person in charge had a friend to entrust this matter to Xiang Weirong, thinking about whether he could get some indicators, even if there were no indicators, getting dozens of kilograms of emergency would be a relief in the snow.

However, far from water can't quench the thirst, and there is no goods in the material bureau for the time being-the welding in that factory can't be stopped for a day, and finally the tin ingot in my brother-in-law's house is bought for emergency relief.

37 kilograms, sold for a lot of money, my brother-in-law talked about it, Zhang Nan remembered it clearly, I don't know if it has been sold now.

Bought a good price to get things Zhang Nan remembers, what he remembers more clearly is how this tin ingot was moved back, which Guan Xingquan was talking about.

"It worked, I almost didn't tire the two of us half to death!

More than 10 years ago, the difference between the price of pure tin on the market and the index price was very large, and we had an old recruit in a platoon, bragging that we could get as many pure tin ingots as we wanted. As a result, the squad leader said that if you have the ability, get me a piece, and I can make a little money next time I go home to visit relatives, and when I get married, I can also ask the tinsmith to make some tin cans and tin pots.

In fact, the squad leader is just joking, everyone doesn't take it seriously, and then think about it, it's just a few kilograms, so it shouldn't be troublesome.

I didn't think that kid was not only a melon-baby, but he really had some skills in this family, and when he visited relatives, he really carried a piece back to the squad leader, 37 kilograms, and he was not crushed to death on the way!

The factory gave the ex-factory price internally, and it seemed to be 13 yuan per kilogram, but the squad leader bought tin ingots and asked me to borrow 150 yuan, and the money that the two of us had saved with great difficulty was all taken out..."

Speaking of the past, Guan Xingquan is also laughing: nearly 500 yuan, that will be a huge amount of money!

But Xiang Weirong didn't sell it when he came home from visiting relatives, and the reason was simple: Later, he transferred to the automobile army, even if he didn't get cheap from the government, he had to get himself some pure tin welding rods for making tin cans and tin pots.

"You didn't think about saving some for yourself back then?"

As soon as he heard Zhang Nan ask, Guan Xingquan smiled even more: "I don't want it, at that time, the squad leader had already set a target with his sister-in-law, so he was waiting to get married in another year or two, and it would be useful to bring that thing back."

Even if you can't use it yourself, you won't have to worry about selling it when you move back, and you can still make some money..."

Well, Guan Xingquan has a good relationship with his brother-in-law, don't say it!

"As a result, at the end of that year, I went home with the squad leader to visit my relatives, and put the thing on the train in a sack, and the conductor on the train thought that the two of us were soldiers in charge of secretly escorting the gold, so he specially arranged for us to go to the sleeper, and did not want us to add money, and even a few meals were delivered by the conductor for free.

The squad elder Jianghu didn't explain that he brought a piece of tin, and slept comfortably in Shanghai for two days. ”

The specific gravity of pure tin is actually less than half of gold, but as long as it is a ingot, let alone carrying it, it will feel dead and heavy when you look at others mentioning it, and it is normal for the staff on the train to take the initiative to be blinded.

Imagine two soldiers in military uniforms carrying backpacks and a dead but small sack on the train, and there are other soldiers on the platform to send them to the station, which is always a little reminiscent.

Before the 80s, the tin ingots weighed 37 kilograms, and Zhang Nan and Boss Guan remembered this clearly. In fact, this is not only the case in China, but also in Southeast Asia half a century ago, such as the famous Awa Maru - the navy organized the salvage of this wreck from 77 to 80 years, although there is not a single tael of gold in it, but 3,000 tons of tin ingots are 37 kilograms a ingot.

As for why it was made into a weight of 37 kilograms, Zhang Nan didn't know the reason, maybe it was because the mold was so big at the beginning, and it became an international standard.

Heavy tin ingots are constantly being lifted up by cranes, and the divers below not only have to fight against the strong water pressure, but also have to do physical work, which is hard enough!

Captain Jamie Bostwick discussed the next salvage plans with dive captain Weta Bruno to see what necessary equipment would be added.

Zhang Nan didn't understand this, so he asked.

Bruno explains, "... In the past, we were all dealing with ancient wooden shipwrecks, and there was only one set of underwater oxygen cutting equipment, and there was no material for underwater blasting.

The torpedo on the wreck is unreliable, and at most it is used as a passage to explore, and if you want to get everything inside, you have to unload the wreck into eight pieces. ”

Zhang Nan frowned and asked, "What about the cost, I'm talking about the overall salvage cost." ”

It's not about the price of the equipment, those things can be used elsewhere. But since it is a business, you can't catch it for two or three years, and as a result, the cost becomes higher than the salvage fee, but you will lose a lot.

"At least 5 to 10 times more profit. ”

"Then prepare, you make a list for the company to purchase. If Indonesia and Malaysia don't have it, they will be transported directly from the United States, and the ship below will not necessarily surprise us. ”

Is it just pure tin?

The ship down there is not a mineral sands ship, and it will not carry only one type of material.

Saying that there might be a surprise, the divers below reported that they had made a new discovery.

After a while, the salvage basket was raised again and put on the deck, and Zhang Nandu had already run to the back of the cargo ship's building - there were not only a few tin ingots in the basket, but also a few steel-gray metal sticks, which were not rusted on them.

To ask Zhang Nan to hide far away, this is the standard security operation method when encountering unknown objects and substances: the previous tin ingots were not used, because there were many things in the shipwreck, even if you can't be sure what it is underwater, you will not be in danger if you know more.

A crew member was holding a Geiger counter, and the gondola didn't react much when it appeared on deck, and how much did the counter react when it got closer, and the value was about the same as the "Great Shark" itself.

The guy stretched out his hand and roared, "Safety!"

It's not radioactive material, and the little devil nuclear technology of World War II is not good - but the metal rods that have been soaked in the sea for decades do not rust and have to be guarded against.

"What is this?"

Zhang Nan is holding one in his hand, which is very heavy, and the specific gravity is at least more than double that of tin, and it is almost able to catch up with gold!