Following this floor to the end, past the fortifications, a heavy iron door appeared in his eyes, the iron door was rusty, and the huge deadbolt was locked, and Wei San stepped forward to try to push the bolt open, wanting to see if he could leave from here.

After a lot of effort, the bolt was opened, but then the door was not pushed open as expected, and several people pulled together for a while without seeing the iron door loosen in the slightest, it seems that the door has been sealed from the outside, and it is likely that the outside was blasted when leaving.

Finding that it was impossible to leave from here, Wei San turned back and looked at the storage holes again, the hole on this side was stacked with chariot parts, and there were also some wheels on the mountain cannons, gun barrels and other things, it seemed to be a cave for maintenance, and looked towards the next cave, there were some sundries such as quilts, steel helmets, etc., and then the next hole suddenly emptied, and there was a hole in the hole that extended downward, which may be the entrance to the lowest level, and the larger hole next to it was placed with a lot of oil drums, there should still be a lot of inventory.

Wei San arrived in front of the entrance of the cave not far away, vaguely as if there was a voice coming out of this cave, Wei San's brows tightened, there is someone down here?

"Be vigilant!"

After Wei San finished talking to the players, he pulled out his pistol and walked into the hole, the slope of the cave was very large, and after walking for a while, he first found a power generation room, the equipment in the power generation room seemed to be often used, Wei San took a look, and then found a hanging crank on the wall of the cave, the generator was started by hand, Wei San took the crank to find the right position, and shook the generator with Chen Zilu, as soon as the generator turned, the light on it hissed and lit up.

Waiting for the generator to be started, Wei San closed the main switch, starting from this cave, the light began to dispel the darkness of the entire fortress, not to mention, the devil's things are indeed quite durable, just like the three or eight big covers, it is still strong after seven or eight years.

The generator "dobbling" sounded, the sound was a little harsh in the quiet mountain, Wei San turned off the flashlight, and continued to go down, and then down, the excavation was rougher, and the cement was only used as a support, and the gray mountain rock was exposed in the eyes of everyone.

Continuing down, Wei San felt that the place was already below the ground, and the air was not dirty, there was a feeling of sullenness, and he went down nearly 100 meters again, the slope eased, and it became an open area in front of him, and the lights on the wall became scarce. There won't be ghosts, right? ”

Gao Baoguo roared: "You big-headed ghost!" Hurry up and keep up! ”

Descending the slope, everyone stepped on the uneven rock, this is a slightly processed space, Gao Baoguo's loud voice made this place echo, the moment the echo was about to fade, a new voice sounded, and it really sounded like a ghost scream: "Help ~ Help ~ Help ~"

"Damn, isn't it, there's a ghost?" Gao Baoguo didn't throw Liu Fugui on his back at once.

Liu Fugui complained and said: "Bold, you be steady, don't forget that I'm still on your back!" ”

Gao Baoguo had an epiphany at this time: "Oh, I forgot, I didn't feel Shen when you were so light, hehe, isn't this startled......"

Ma Youde felt that this place was gloomy, and he was intimidated by the voice just now, and couldn't help but ask Wei San: "Captain.... The voice just now ....."

Wei San sneered: "It's a shame that you're still a warrior of the Republic, how can there be a ghost, there are just a few Yankees locked up here." ”

solved the doubts, so that everyone breathed a sigh of relief, they don't have anything to fear when dealing with the Yankees, but they can't deal with the marginal things, then there is no way, they are warriors, not Taoists, the profession is not right.....

Wei San took the lead in going deeper, and after walking a few steps, a water prison appeared in the eyes of everyone, half of this water prison fell into the rubble, it may be that the water level dropped too much, leaving only a small amount of water, and it could only drown people's feet, and there were a few hairy guys in the water prison who were holding the iron fence on the water prison, looking at the people of the special combat team with expectant eyes.

"For God's sake, save us!" A "hairy monster" said in English.

Wei San stepped forward to look at a few people in the water prison, who had been in this environment all year round, and those people were all pale, swollen, and had long hair that was no different from the wild man, they stretched out their hands and cried to Wei San: "Please, please, let us out....."

Wei San squatted down, slowly lit a cigarette, looked at a few people in the water prison and said, "You are Americans?" ”

A few of them nodded violently, and then Wei San asked again: "Why did the Japanese arrest you?" ”

This question silenced several people in the water prison for a while, and then one of the leaders said: "We are an American exploration team, and we were captured during a mission in North Korea in 43 years......"

"43 years..... They've been locked up here for eight years, and the little devils are really idle, if it were me, I'd have killed them a long time ago. Chu Jian said to Wang Liansheng.

Wei San's cigarette butt turned red and asked, "Why did they arrest you?" ”

The guy stopped talking again, it seems that there are some things that he doesn't want Wei San to know, Wei San understands when he sees it, and immediately stands up and plans to leave, the guy sees that Wei San is in a hurry, so he hurriedly says: "We have detected some rare ores here......"

Wei San stopped his body and turned around and said, "What ore?" ”

The guy closed his mouth again, and Wei San said unhurriedly: "Ore? It's uranium ore, right!? ”

This sentence made the guy who was struggling in his heart raise his head sharply: "You, you, how would you know!?" ”

Wei San squatted back in place and said: "You don't have to worry about it, I'm more interested in your discovery now, can you tell me where the uranium ore was found?" ”

The guy who was questioned could stuff a goose egg in his mouth, and the shock in his heart was almost like a storm, could it be that uranium ore was no longer a secret in recent years?

uraniumore

Refers to the mineral raw materials from which uranium can be extracted under the existing technical and economic conditions.

There are four classifications of uranium ore:

(1) Classification according to the composition of surrounding rock or gangue. The main component is silica called silicate type ore. A high carbonate content is called carbonate-type ore.

(2) Classification according to uranium content. The high uranium content is called a bonanza. Some rich ores contain a few percent of uranium, but their reserves are generally not large. Those with low uranium content are called lean ores. Unless it contains other useful components, uranium can be recovered as a by-product and has no mining value at present. The ore with moderate uranium content (0.05%~0.2%) is called general grade ore, which is the main raw material for industrial uranium extraction.

(3) Classification according to the difficulty of leaching uranium from it. Secondary uranium ore is generally a leachable ore, and primary uranium ore and uranium ore containing more clay and organic matter are refractory ores.

(4) Classification according to the presence of uranium and other useful components in the ore. Ores with only uranium as useful components are single uranium ores, and ores that contain other useful components other than uranium are called composite ores. The processing of the latter needs to consider the issue of comprehensive utilization.

There are about more than 100 kinds of uranium minerals, and the uranium minerals of industrial significance are mainly bituminous uranium ore and crystalline uranium ore, followed by calcium uranium mica, potassium vanadium uranium, silicon-calcium uranium, hydrosilica uranium ore and titanium uranium ore. The industrial types of uranium ore include: granite type, volcanic rock type, sandstone type, carbon-silicon mudstone type, sedimentary rock type, quartz conglomerate type, Proterozoic unconformity related type, etc. The world's main uranium ore producing areas include Canada, the United States, the former Soviet Union, Australia, South Africa, Namibia, Niger and France. China's uranium ore resources are relatively rich, mainly hydrothermal vein and sandstone deposits, and the deposits are mostly medium and small scale, and the uranium grade is mostly medium and low grade. The ore body is buried deep and is mostly mined underground. China's uranium ore is mainly produced in Guangdong, Jiangxi, Hunan and other provinces.

Uranium is the seventh period MB group element in the periodic table, one of the actinides, is an important natural radioactive element, element symbol U, atomic number 92, atomic weight 238.0289. In the entire sequence of elements, after about the position of iron, each nucleus has a tendency to split, but it does not split because the gate prevents it. The last element found in nature, uranium, had the weakest floodgates, and it was this element that was first broken in 1936 by Hahn and his colleague Strassmann in experiments. The uranium atom has 92 protons and 92 electrons, 6 of which are valence electrons. Uranium is a silvery-white metal with a melting point of 1132.5'C, a boiling point of 3745 °C, a density of 18.95g/c bang, a resistivity of 30.8X10-8n"m, a tensile strength of 450MPa, a yield strength of 207MPa, and an elastic modulus of 172GPa. Uranium has a thermal neutron absorption cross section of 7.60b, uranium has 15 isotopes, and its atomic weight ranges from 227-240. All uranium isotopes are unstable and weakly radioactive. The natural isotopic composition of uranium is: 238U (natural abundance 99.275%, atomic weight 238.0508, half-life 4.51X109a), 235U (natural abundance 0.720%, atomic weight 235.0439, abundance and maturity 7.00X108a), 234U (natural abundance 0.005%, atomic weight 234.0409, abundance and maturity 2.47X105a). Among them, 235u is the only natural fissionable nuclide, which absorbs a neutron when bombarded by a hot neutron and then fission, releasing a total energy of 195MeV, and releasing 2~3 neutrons at the same time, triggering chain nuclear fission; 238U is the raw material for the production of plutonium for nuclear fuel.

The configuration of uranium's outer electron shell is [Rn]5f36dl7s2, and there are four valence states of +3, +4, +5, and +6, among which the +4 and +6 valence compounds are stable. Uranium is chemically active, can interact with all non-metals (except noble gases), and can form alloys with a variety of metals. It is easy to oxidize in the air, forming a layer of dark oxide film, highly crushed uranium is very easy to spontaneously ignite in the air, bulk uranium is easy to oxidize in the air and lose its metallic luster, and it is heated in the air to burn, uranium can react with all non-metals, react with sulfur at 250 °C, react with nitrogen at 400 °C to form nitride, react with carbon at 1250 °C to form carbides, react with hydrogen at 250-300 °C to form UH3, UH3 decomposes at 350-400 °C in a vacuum, and releases hydrogen. Uranium reacts with halogens to form halides, uranium can react with mercury, tin, copper, lead, aluminum, bismuth, iron, nickel, manganese, cobalt, zinc, beryllium to form intermetallic compounds, uranium metal is slowly dissolved in sulfuric acid and phosphoric acid, uranium will accelerate dissolution when there is an oxidant, uranium is easily soluble in nitric acid, uranium is inert to alkaline solution, but when there is an oxidant, uranium and its compounds have greater toxicity, the allowable concentration of soluble uranium compounds in the air is 0.05mg/m3, and the allowable concentration of insoluble uranium compounds is 0.25mg// m3, the permissible dose of radioactivity of natural uranium in the human body, 7400Bq for soluble uranium compounds and 333Bq for insoluble uranium compounds.

At the critical moment of inquiry, there was another vibration in the cave, and the explosion sound overhead showed that those grandsons had not given up their plans to go inside, which made Wei San very annoyed, and pointed the pistol at the surprised guy, just when the guy thought Wei San was going to kill himself, Wei San lived: "Take him on, we should go to fight!" ”

The two team members roared together, and the seemingly solid iron door of the water prison was kicked inward, and the two of them dragged the guy out of the water prison like dragging a dead dog, one left and one right, just out of the water prison, there was a burst of explosion overhead, it seems that the guy outside really ate the scales, and the matter can no longer allow them to hesitate.

The remaining few "hairy monsters" still have something to say, Wei San has already run out, Ma Youde looked at them and said to Gao Baoguo: "What about these few?" ”

"Take it away, you can do it, I'll go up first, damn, these South Korean wastes actually want to come and die, then I'll fulfill them!"

Ma Youde and the two team members pressed the prisoners in the water prison back to the second floor, and found that there were few people on the second floor, Chu Jian, who stayed on the second floor, pointed to the top of his head and said: "They are on the first floor, you come with me to move these stones, we will stop them on the second floor!" ”

Ma Youde asked a member of the team escorting the prisoners to tie up the prisoners, and then he went in the direction of Chu Jian, the location that Chu Jian chose had begun to be cleaned up, seven or eight people were moving away from the rocks that had collapsed, and after some busy work, the shooting hole built by itself was half exposed, and the shooting hole made of cement was only a palm wide, when the devil evacuated, it only blew up the mountain rock, and did not destroy the cement, this shooting hole was not enough for people to pass through, and it was more convenient for Chu Jian and others, taking advantage of the time of cleaning, Two more Type 92s were lifted up from the third floor, how to say, the bullets were open.

Through the corner of the shooting hole cleared out, we can see that the South Korean army under the mountain has a large area, and the number may be 4,000 miles away, and the South Korean army of these dogs can only find soft persimmons to pinch and use more than 4,000 people to attack 29 people, what is the concept?

These South Korean troops didn't do anything for a few hours, they just smoked, drank and farted at the bottom of the mountain, anyway, no matter how ferocious the beating in the city was, it had nothing to do with them, but they had a "serious mission" to pursue the culprit who killed the brigadier general.

Ma Youde and the two soldiers dragged the last boulder behind the shooting hole away, and the shooting hole was exposed again, and at this time, the layer above their heads was almost to the last step, you know, the layer above their heads was a cannon with little devils, and it was also a cannon with a caliber of more than 100mm, Wei San and his team members cleaned up the side facing the South Korean army, and those South Korean troops were still competing with the position they entered here!

Ma Youde and Chu Jian held two Type 92 guns, and the two team members in another shooting hole not far away were also ready to go, and when the first shell was fired with the sound of the cannon "bang" overhead, Ma Youde and Chu Jian fired together.

The Type 92 is not as powerful as the M2 Browning heavy machine gun, and he fires 7.7mm caliber bullets, but what is the situation now? There are thousands of South Korean troops below, and it can be seen from the strength of the troops that it is very likely that a division of the South Korean Army is gathered here, and it sounds good to say that the culprit of pursuing and killing the brigadier general is to put it mildly, they are just a bunch of deserters!

The South Korean Army is a group of deserters, not even as good as deserters, and if the deserters are caught, they will be sentenced to be shot or something, but the guys here have a very legitimate reason, on a jeep at the foot of the mountain, the supreme commander of this group of South Korean Army, who should be called the commander of the "Pseudo 9th Division", was leaning over to ignite the cigar between his fingers, and a sudden bullet flew towards his position.

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