Zhou took a few entourages and drove two cars with Yang Yu and Wang Ziwen. Park your car near Cave 1012. Director Zhou asked people to take down two sets of miner's lamp and mine hat security equipment from his car to Yang Yu and Wang Ziwen.

A safety fence line has been set up around the 1012 mine. The staff accompanying Director Zhou raised a section of the isolation line to facilitate everyone to pass through the safety separation line.

Yang Yu and Wang Ziwen, accompanied by Zhou, took the elevator of the mine and went down to the 1012 mine. The mine is 100 metres below the surface. The inside of the mine is still relatively dry, and the temperature is much warmer than the ground.

After several people went down to the mine, they walked about forty or fifty meters along the roadway and saw the scene of the explosion. The explosion site was blackened by explosives in many places, and the supports of the roadway were also damaged to varying degrees, and some of the supports still had blood stains on them.

Yang Yu carefully surveyed the explosion site and found no valuable information. However, Yang Yu vaguely felt that there seemed to be some secret hidden in it. If there were only two people at the time of the explosion, Ding Shicheng and Qiao Xisan, how did the information about the explosion be transmitted?

Ding Shicheng was killed on the spot, Qiao Xisan was also seriously injured, and Qiao Xisan still couldn't speak even though he was being treated now. If it was just the two of them, the explosion would not have been transmitted to the outside world. In addition, when an explosion occurs, the communication transmission lines in the roadway are also blown up, and it is impossible to transmit information to the outside world. Mobile phones are also not usable in the roadway more than 100 meters down.

If you reason from the information here, there should be a third person. So who is this third person? Is this third person on the surface of the mine, or is it also in the tunnel?

These questions are the questions that Yang Yu is thinking about in her mind at this moment, and in order to verify her judgment, she is carefully looking for clues at the scene of the explosion.

The site of the explosion had actually been severely damaged. There were at least two groups of people here after the explosion. The first wave is the rescue personnel, that is, the first wave of medical personnel who snatched Ding Shicheng and Qiao Xisan away. The second wave was the investigators of the Public Security Bureau after the accident. I came this time, at least the third or fourth wave of people.

Yang Yu searched back and forth at the explosion site, but did not find any valuable information. In this mine, the ventilation equipment has been deactivated, and if you stay in it for a long time, you will feel that there is no air circulation. Yang Yu's search for more than half an hour made her feel tightness in her chest and shortness of breath, and she didn't care that there was coal dust everywhere, so she sat in the middle of the roadway, resting on the tracks of the coal truck.

She lifted one hand to wipe her forehead with sweat and one hand on the railroad tracks.

Suddenly, she felt the middle finger of the hand she was caressing on the rails touch something soft. She looked at the thing.

She quietly pressed the thing with her middle finger again, and the thing that seemed to be only the size of a peanut, stained with coal dust, and black and not slipping, was pressed by her fingers and sunken a little, much like black plasticine.

If you don't touch this black plasticine, you think it's a small coal core. It is its shape and color that make it particularly easy to think that it is a coal core. Yang Yu's intuition was that this little thing might be hiding some secret.

She quietly pinched the small coal core with her thumb and forefinger, and then pretended to wipe her sweat and put the small coal core in the trouser pocket of her jeans.

After everyone rested for a while, they did not choose to continue the survey. Everyone took the mine elevator back to the surface.

Yang Yu and Wang Ziwen conducted a survey on the ground near the mine for more than half an hour. No valuable information was found. Together, they returned to the mine's administration building.

After Yang Yu said goodbye to Zhou, the second stop he chose to go to was the staff hospital located in the mine. Vice President Liu of the Staff Hospital was on duty, and after Yang Yu saw Vice President Liu, he explained his intention.

Vice President Liu is also an old man in the mine, and naturally knows that Yang Yu is the pearl of Chairman Yang Changqing. He took Yang Yu and Wang Ziwen to the ICU ward to see Qiao Xisan, who was being treated.

Qiao Xisan, who was lying on the hospital bed, was wearing an oxygen mask on his face and several sensors attached to his body, monitoring his heart rate and other physiological indicators. Qiao Xisan's eyes were closed, he was in a coma, and he was not awake yet. His arms and thighs were wrapped in gauze, which he was presumably injured in the explosion.

During Qiao Xisan's treatment, he did not have any relatives or friends to accompany him. Qiao Xisan was brought back from outside by Ding Shicheng, and he lived alone in the mine. Therefore, he could not find out more information from his relatives and friends.

Yang Yu also couldn't get useful information from Qiao Xisan's line.

At noon, Yang Yu and Wang Ziwen had a simple meal in the mine's staff canteen, and she decided to go to the coal washing plant in the afternoon. Let's see if you can find some information about Ding Shicheng and Qiao Xisan in the coal washing plant.

When Yang Yu and Wang Ziwen arrived at the coal washing plant, they did not go to the director of the coal washing plant, Wang first. She first asked the grassroots workers at the coal washing plant about Ding Shicheng and Qiao Xisan.

Through conversations with workers, I learned that Ding Shicheng and Qiao Xisan only came to work at the coal washing plant at the beginning of last year. Everyone knows that Ding Shicheng is the brother of Ding Zicheng, the general manager of the company. So everyone usually gives Ding Shicheng some face, and no one provokes him.

When Ding Shicheng was the director of the coal washing workshop, he was not a competent management cadre at all. He's more of an idle bastard. The bastards of the coal washing plant were all around him. Qiao Xisan was brought back by Ding Shicheng from outside, and Qiao Xisan is also the little leader of this gang of bastards.

Ding Shicheng's hands and feet are not clean, and he often deducts everyone's bonus salary. He also often organizes people to play cards and gamble in the office. Because there were some bastards fighting around him, everyone didn't dare to provoke Ding Shicheng easily.

Ding Shicheng has a young and beautiful wife. As for what it is called, no one knows. His wife sometimes came to the coal washing plant to find Ding Shicheng.

After Yang Yu visited the workers at the grassroots level, he went straight to the office of the director of the coal washing plant. Director Wang has only come to the coal washing plant in the past two years, or Ding Zicheng has recruited him from outside, and he should be Ding Zicheng's person.

Yang Yu was dealing with Director Wang for the first time. But Director Wang knew that Yang Yu was the beloved daughter of Chairman Yang Changqing. Therefore, Director Wang was quite polite when he saw Yang Yu.

When Yang Yu explained his intention and said that he wanted to know about the situation of Ding Shicheng and Qiao Xisan, Yang Yu never expected a news from Director Wang.

Director Wang told Yang Yu that Ding Shicheng and Qiao Xisan were no longer employees of the coal washing plant. As early as three days ago, the working relationship between Ding Shicheng and Qiao Xisan had been transferred from the coal washing plant to the mining team.

Director Wang said as he handed a red-headed document issued by the Human Resources Department to Yang Yu.

This document would not be strange at any time. But at this time, this red-headed document can make some seemingly unreasonable things reasonable.

The appearance of this red-headed document is a good explanation of why Ding Shicheng and Qiao Xisan appeared in the 1012 mine. If they were just employees of the coal washing plant, there was no reason for them to be in Cave 1012. But with this red-headed document, it is justified that Ding Shicheng and Qiao Xisan appeared in the 1012 mine.

Moreover, this red-headed document issued by the Ministry of Human Resources also clearly pointed out that in order to give full play to some old mine resources, Daqingshan Mining Company specially transferred Ding Shicheng and Qiao Xisan to the mining team and organized an old mine resource recycling office. Ding Shicheng served as the director of the old office.

Yang Yu knew that she couldn't get more and more valuable information from Director Wang, so she simply said a few words of greeting and left the coal washing plant.

Yang Yu always felt that there was something strange about this red-headed document issued by the Human Resources Department. She decided to go to the human resources department again to check when the document was signed.

Yang Yu went to the human resources department of Daqingshan Mining Company to verify the information, which made her very disappointed. The director of the human resources department and the supervisors below told her that the red-headed document about Ding Shicheng and Qiao Xisan was issued three days ago.

Just when Yang Yu was at a loss, doubting the reasonableness of her reasoning, a shout interrupted her musings.

"Sister Yang Yu. ”

Yang Yu followed the voice and found that it was a young girl.

"Sister Yang Yu, don't you know me? I'm Xia Jiali. Xia Jiali from Inner Mongolia Normal University. When you and Chairman Yang went to our school to donate money to support education, I also presented flowers to the chairman and you. The girl named Xia Jiali reminded Yang Yudao.

"When you say that, I have the impression that I did go to your school with my dad. But that was years ago, and I can't even remember the name. By the way, how did you get here?" Yang Yu asked with a smile.

"Sister Yang Yu, after I graduated, I went to work in Daqingshan Mining Company. I studied computer science and now work in the information department of our company. ”

"You work in the Information Technology Division?"

"Yes, our company has changed a lot in recent years. In particular, information management. Our Daqingshan Mining Company now has its own OA and ERP ......," Xia Jiali said ostentatiously.

"Xiao Xia, let me ask you, if you say that our company has used information office, can it be said that many of our document processes have two kinds of electronic signature and approval records and paper printing?" Yang Yu suddenly thought that maybe this Xiao Xia could surprise himself in the query of information content.

"Yes, now all the documents of our company, as long as they are at the company group level, will have electronic records and paper printing. The departments under each branch are not necessarily, they only have some paper. Xia Jiali said.

"According to you, the documents such as personnel appointments, dismissals and transfers issued by the human resources department of our group have a record of signing and approval in your system?" Yang Yu asked with a little excitement.

"It's definitely there. Because this is a document issued by a first-level unit. At least it has been implemented since the year before. Xia Jiali said affirmatively.

"Great, can you accompany me to look up a personnel information, this matter is related to my father. You've probably heard about the mining crash as well. ”

"No problem, please Sister Yang Yu follow me to the computer room, and we'll check it now." I absolutely believe in Chairman Yang!"