As soon as Deng Li returned to Liaocheng, she said that she was too tired and needed to rest, so she used this as an excuse to leave alone.

Yan Shisan looked at the back of Deng Li leaving, and said to Tian Zheng, "Commander, I think this Adjutant Deng is very interesting to you!" ”

Tian Zheng looked at Yan Shisan, who was joking with him, and said helplessly in his heart, "If you know that Lu Dao is an agent of the military commander who is interesting to me, I don't know if you can still laugh at Lu Dao!" ”

However, Tian Zheng obviously did not tell Yan 13 that Deng Li was an agent of the military command. Tian Zheng has his own plans.

"You go and rest first. Wait for a meeting at eight o'clock in the evening, and you just remember to come on time. Tian Zheng waved his hand at Yan Shisan. For this strange man in the rivers and lakes, Tian Zheng gets along with him like a friend.

Tian Zheng experienced this battle, and was always dominated by nervousness and excitement, and as soon as he relaxed at this time, he also felt tired and wanted to rest. But obviously he was a hard worker, and before he could lie down on the bed, Liu Tianxing came to report to him.

"Commander, the steel smelter has been built, just waiting for you to determine the start date!" When Liu Tianxing said this, he couldn't hide his joy. He never imagined that the young man he met on the way when he was so poor that he could only eat a bowl of five-yuan wontons would change his life like this!

Although Liu Tianxing was also an engineer before, he only had such a hand in operating lathes, and he could be regarded as a small person in this arsenal that lacked talents. But he was cleaned up by Li Wei, the commander of the guard company with the head of the security regiment as the backstage, and almost starved to death on the street. He never imagined that he would have such great ability, and he never dared to imagine that one day, some weapons of cross-era significance would come from his own hands, and a huge steel smelter would also be completed under his supervision!

Tian Zheng was also happy when he heard the news. Finally the construction is complete! I won't be short of steel from now on! I can use this steel to make guns, cannons, airplanes, and tanks! I want to build what I want! I will make two copies of each of them, one for war and one for the enemy!

Liu Tianxing looked at Tian Zheng alone in that silly music, dancing for a while, muttering to himself for a while, he was too frightened to speak, and hurriedly ran out secretly.

"Inform the smelter, I'll cut the ribbon tomorrow morning!" Tian Zheng shouted in the back of Liu Tianxing who fled in the wilderness.

As soon as Liu Tianxing left, Hei Laoqi, who was in charge of digging coal, came. The purpose of Hei Laoqi's visit was to settle the wages of the workers, and the other was to inform Tian Zheng that the coal mine had already dug up to the rock layer, and it was difficult to continue digging by relying on manpower, and the construction progress had been delayed in the rock layer for more than a week, and there was no obvious progress.

Tian Zheng frowned with the progress report of the construction, this report was what he told Hei Laoqi to record, but Hei Laoqi obviously did not have a high level of education, and the report was written in a mess, Tian Zheng felt that it was time to train a group of specialized secretaries.

"Guards! Prepare the car! Tian Zheng decided to go on a field trip. It's just that looking at the book in his hand like this, trying to really understand the situation, it's a bit unrealistic.

"Report to the regiment commander, that, after you drove the car away last time, there were no cars in the regiment." The guard said cautiously.

Tian Zheng thought in his heart, too. There were only two cars in the group, one of which was left for Wu Tianfu and Lu Feng to pull out and go to find mines. After the other part was exchanged for Han Fuqu, he drove it to Qingdao and blew up the Japanese military camp in Qingdao.

Just when Tian Zheng was thinking about how to get a few more cars for emergency, a brand-new off-road vehicle slowly drove from the gate of the regiment headquarters compound. The driver was a beautiful woman in a military uniform, who honked her horn and smiled at Tian Zheng.

"Adjutant Deng, you came in time. You don't need this car now, right? I borrowed it for use. Tian Zheng said cheekily as he was about to get into the car.

Deng Li smiled and opened the car door, "What did the head of the regiment say, this car was originally meant for you." I'm just a car delivery guy. If the head of the regiment doesn't mind, why don't you let me be your full-time driver during this time? ”

Tian Zheng hurriedly responded, "That's really thank you!" But it's so troublesome Adjutant Deng, I'm a little reluctant to be the head of the regiment! ”

Deng Li didn't say anything more, and after Tian Zheng beckoned Hei Laoqi to get into the car, she drove to the scene of Yanggu Coal Mine.

Tian Zheng and Hei Laoqi took the crane of the mine down to the bottom of the mine, the whole mine has reached a depth of more than 80 meters, around the mine all the concrete and steel plate enclosed by the wall of the shaft, concrete and steel plate layer by layer, a total of six layers, the thickness reached 80 centimeters, and the further down the thicker it became, to this depth of more than 80 meters, the thickness has been 11.5 meters! This is the result of Tian Zheng's calculations. Because the deeper the mine, the greater the pressure on the walls below. If there is no strong enough support, then the mine can collapse at any time!

At the bottom of the mine, a lot of electric lights have been erected, and the construction frame has been fixed here, and the workers have stopped the construction because of the lack of progress, Hei Laoqi pointed to the hard rock and said to Tian Zheng, "Commander, you see, these rock layers are extremely hard, and our workers have tried various methods, but they can't dig any more." ”

Tian Zheng looked at the diameter of the mine, and when the mine was hit here, the diameter that was originally ten meters above it had shrunk to more than eight meters. The platform for construction appears to be a bit narrow.

"Have you tried explosives?" Tian Zheng asked Hei Lao Qidao.

"I didn't dare to use the explosives. It's not easy for us to get our hands on it. Hei Lao Qi shook his head.

Tian Zheng carefully checked the shape and texture of the rock, and then signaled the people above to raise the hanging basket.

"Has the engineer battalion transferred by Governor Han arrived?" Tian Zheng asked again.

"Not yet. But a soldier came in the morning and said that the men from the engineer battalion would come in the afternoon. Hei Laoqi replied.

"Then I'll wait for them here."

The men from the engineer battalion came quickly, saying that they had arrived in the afternoon, but in fact they had already arrived before noon. However, there were not many people, there were probably only two platoons, each in two trucks.

Leading the way was a major. is called Yang Jian, and he is the deputy commander of the engineer battalion.

"Head Tian! Yang Jian, the deputy commander of the engineer battalion, came to report on the order of Governor Han! Yang Jian saluted.

Tian Zheng didn't talk nonsense after returning the salute, and immediately pulled Yang Jian to study the blasting plan.

"Head Tian, I think it is very dangerous to carry out such a blasting in such a deep shaft! If the blast is too powerful, it will not have any noticeable effect, and if it is too powerful, it is likely to cause fatal injury to the construction personnel underground or cause the mine to collapse. And if the mine collapses, then everyone involved in the construction will not have any chance of survival! Yang Jian is also an expert in blasting, just took a look at the situation underground, and said to Tian Zheng.

"This problem is possible, but the probability of it appearing is very small! I don't know if there is a miniature blasting for Camp Commander Yang? Tian Zheng smiled as he spoke, holding a few blank pieces of manuscript paper and drawing on them with a pen.

"I haven't heard of that." Yang Jian replied while staring closely at the manuscript paper under Tian Zheng's hand with his eyes.

"Micro blasting is to use the least amount of explosives to achieve the maximum blasting effect for the object to be blasted! In general, because the explosive charge is too small compared to the large-capacity blasting, it is called miniature blasting. The principle of micro blasting is to find the weaknesses of the blasting object according to the characteristics of all aspects of the blasting object before blasting. For example, this rock layer we encountered is composed of granite, these granite are buried deep in the ground, after years of accumulation, very strong, if you want to use conventional blasting methods, you have to use a lot of explosives at a time, and the result can only blow up a very thin layer! We can actually take a closer look, although these granites are strong, they do have a certain texture. If we find a few charge points on top of these textures, a vertical charge, and then blast it, then not only can we save a huge amount of explosives, but also avoid accidents! What's more, this blasting method can blast these granite rocks to crack along the texture! Tian Zheng drew a schematic diagram while explaining to Yang Jian.

Yang Jian listened to Tian Zheng's explanation, and the more he listened, the more shocked he became. He even felt that compared with the young regiment commander in front of him, he even felt that the difference between a child and a giant was like that of a demolitionist!