The gas explosion is more powerful, but it will have to wait until after the auction starts next month, and the fireworks will be very beautiful, and there will be no need to use any explosives, which will minimize the possibility of leaving evidence.

The guys who were transferred from Nice to London didn't need any explosives, and this would be in the city of Tagil, the center of heavy industry in the Sverdlovsk region in the Urals region of Russia, and Vasily, who had not returned to Russia for some days, was in a dual-use explosives manufacturing plant west of the city, listening to the director and engineers of the plant introduce the "depth charge" manufacturing process.

The city was one of the most important centers for the manufacture of tanks and armored vehicles during the Soviet era, and it goes without saying how difficult it has been for the past two years, and the Russian army has not given orders at all.

A large number of tanks in service have been sealed and sold because they cannot be raised or used, and even directly thrown into the field to be rusted and scrapped.

The whole city almost revolves around heavy industry and military production, and as soon as the Soviet Union was finished, factories and ordinary people were unlucky, and now someone came to the door to make civilian deep-water blasting devices, or urgent orders from regular foreign diving companies.

There is no opinion on the top, they are all related households, and even missiles will be sold in the past two years, let alone such civilian goods, no problem at all!

Vasily originally thought that some secret technology would be involved, but depending on the attitude of the director of the Lvivkin plant and the engineers, it seems that this problem does not exist at all.

The director of a heavy industry factory born in the Soviet era was basically a professional engineer himself, and there were not many cases where laymen were in charge of insiders.

"Comrade Vasily, high-pressure resistant special explosive bombs with a yield of less than 1 ton are not a problem for us. We already have the available molds, which can be done by selecting high-strength steel plates."

Comrade Vasily, when I first arrived this morning, some of the people who welcomed the contact at the factory called him comrade, and some called him sir, and Vasily felt that the title of comrade sounded more comfortable.

"It can be called a blasting barrel, the main part does not need to use an elongated oval or teardrop-shaped, and within 3000 meters we use a cylindrical shell.

Cap, Comrade Vasily, look at this part," he gestured on the sketch drawn on the blackboard, "the cap is threaded to the casing, screwed to death, and according to our processing accuracy, it will not leak in seawater at a pressure of 300 atmospheres for a year.

The electric detonator can be dealt with with the non-barrel perforated iron-shelled electric detonator used in the production of oil wells, and there is no need to use more expensive special gun-body perforated copper-shelled electric detonator. ”

Hearing this, Vasily interrupted him and said: "Comrade Lviv, what is the difference between these two special electric detonators, our company wants the most reliable equipment. ”

Vasily knew about detonators, but he had never touched the special pressure-resistant detonators used in oil wells, he was a red devil, but not a god.

"A shot of the copper shell is about ten or twenty dollars more expensive, and such a bomb is detonated at least 2 times, so there is no need to make such a senseless waste.

The reliability of these two special detonators is actually the same, theoretically as long as the pressure is within 34,300 kPa, that is, within 3,400 meters of depth, there is absolutely no problem.

The difference is that the special copper shell detonator has good heat resistance, and can be used in high-temperature oil wells with an oil temperature of more than 120 °C, but not an iron shell.

For use in the marine environment, we believe that unless it is directly next to the hydrothermal vent under the sea, it is a waste to use copper shells. And it is more convenient to purchase such iron-clad detonators, which are available in the oil mining areas of Tyumen.

We have a relationship over there, and we can have people drive to buy it now, but it's not easy to find the copper case."

A bomb is dozens of dollars more expensive, will Vasily, the company and the boss care?

Of course I don't care, but Vasily is also a Russian character in his bones, as long as it works, what is iron-clad is iron-clad, time is the key.

Vasily looked at the sketch, and the blaster would be controlled by wire, and the exit hole of the foot wire connecting the electric detonator would be closed with epoxy glue - yes, even the common epoxy resin, without the prefix "special".

The engineer said that the epoxy resin has moderate flexibility and stiffness, and there is a certain deformation synergy ability, and the greater the pressure, the contact between the epoxy resin glue and the detonator foot line and the blasting cylinder cover will be tighter and tighter, forming a self-sealing function.

It is a bit particular when wiring, and the foot line needs to be horizontally attached to the blasting cylinder cover to increase the contact length between the sealing and the foot line.

The charge is relatively high-grade, cyclotriple methyl trinitrate, commonly known as black suojin, with the filling method, not afraid of water, even if it leaks, it can be fried with an anti-high-voltage electric detonator.

In addition to the special detonator and charge, the problem of stumping the salvage company was solved with simple civilian technology, and even Vasily, a Russian, found it a little incredible.

Russia's problem-solving mentality will always be understood only by the Russians themselves.

Later, when it came to the price negotiation stage, the price and conditions given by the factory were not high, but the factory only gave 5 sets of long wires needed, and the other purchasing parties bought them themselves, anyway, the wires that could be used were easy to find.

A 750-kilogram equivalent is $2,000 for a piece, $8,000 for a tonne and a half-equivalent, and a 100-kilogram equivalent for $1,000.

One is not done, the small one starts with 60, the medium one starts with 30, and the large one does at least 10 at a time, you can choose it single, or you can do both.

The price is not proportional to the size, which is related to the difficulty of molds and filling. Ten years ago, how could this factory be able to afford this business, but now it is difficult, there is no way, and it is forced.

Vasily did not bargain, adding 50% of each, but asked the factory to send a technician to the salvage site to assist at that time, and the salvage company would subsidize it.

In addition, there is an additional clause: the goods must be sent by the factory to the lower Tagil airport, and each blasting cartridge must be equipped with an outer packaging suitable for air transportation.

As for other subsequent conditions that may arise and require high costs for the buyer, the salvage company will provide funds.

Everyone was happy, and Vasily bought the blasting cartridges that were expected to be dozens of times the maximum demand for salvage, anyway, these blasting cartridges can be stored for at least 15 years without problems, and it is not a waste to buy more at one time.

When Vasily called to report to the boss, Zhang Nan laughed when he heard that he had bought so much.

It only cost $300,000 to buy 150 deep-sea blasting canisters, large and small, and if they were replaced with "wire-guided deep-sea torpedoes", including the cost of modification, they might not be able to buy any of them.

And then here comes the problem!

The "Deep Diver" is in the UAE, and it is impossible for the bomb to be delivered directly to the airport, what should I do?

Simple, this trip uses two or three at most, and one of them is airdropped during transportation - wrapped in airdrop materials, thrown directly into the sea, equipped with an automatic inflatable undulation device, and salvaged after the big ship.

Brutal, simple, direct, efficient.