"Professor Tong, the results of the radioactive test are out." An inspector in his thirties handed Tong Sifang the report paper in his hand and looked at him worriedly: "The radiation dose rate of this sample ore is 0.21μSv/h, which is rare in bauxite in our province. ”

"0.21μSv/h?" Tong Sifang looked at the dense formulas and final result data on the report, and couldn't help but fall into thought.

No wonder Zhong Bai emphasized that after bringing back this piece of bauxite before, he emphasized that he should have a good test, but he didn't expect that in the testing process of more than half a month, no other characteristics were found, but there was a breakthrough in the data of the most unpopular radiation dose rate.

It stands to reason that bauxite cannot have such a high radiation dose, especially in large underground bauxite mines.

This piece of ore, when Zhong Bai handed it to him, said that it was found in the No. 2 sub-mine of the underground bauxite mine in Heyuan City.

At that time, Zhong Bai just said that this ore felt a little special, and asked himself to help test it, and told him as soon as he had the results, but Tong Sifang was busy with the subject in his hand some time ago, and Zhong Bai went to Ukraine at that time and never urged himself, so after the subject was done for more than a month before he freed his hands, Tong Sifang immediately began to organize personnel and laboratories to test this ore.

Now he has really found some famous tests! That's the apparently high radiation dose rate!

Looking at the other contents of today's test report, there is nothing worth writing about, Tong Sifang waved his hand to the five experimenters: "Okay, big guys have worked hard, hurry up and go to dinner, tomorrow you will all take a day off, and come back to work the day after tomorrow." ”

Five experimenters who have been working continuously for more than ten days without rest breathed a sigh of relief when they heard this, and they took off their experimental coats and hurriedly drove away, while Tong Sifang thought about it, carefully packed the remaining part of the ore in a transparent plastic bag, and brought the test result report paper, turned off the laboratory lights, and hurriedly left the Provincial Chemical Research Institute.

Looking at the watch, it was already half past eight in the evening, and Tong Si conveniently took a taxi and went straight to the new family home of the Provincial Department of Industry.

Zhong Bai will definitely not be in the unit at this o'clock, and the children Quartet knows about Zhong Bai's move to a new house, and the only way to give the test report to Zhong Bai as soon as possible is to go to the house to find him.

Zhong Bai had just finished washing the dishes and was watching TV in the living room with his parents when he heard someone knocking on the door.

"Who?" Zhong Baileng paused for a moment and asked.

Tang Cuihua frowned, then turned his head to look at Zhong Dasheng, and complained in a low voice: "Old Zhong, is Lao Liu next door going to play chess with you again?" But why did you come to you so late today? ”

"It's definitely not Lao Liu! The day before yesterday, he said that he was going back to his hometown, and I don't know who it was. Zhong Dasheng was obviously confused, and said to Zhong Bai next to him: "Xiaobai, you go open the door and take a look." ”

Zhong Bai opened the door and looked surprised: "Professor Tong? ”

"Xiao Zhong, the test report of the ore you gave me last time came out, and there was a discovery!" Tong Sifang's face was full of excitement.

"Hey, Xiaobai, why are you blocking the door and not letting the guests come in?" Tang Cuihua said from afar, and Zhong Bai hurriedly stepped out of the way and welcomed Tong Sifang into the living room.

Seeing that it was an old comrade, Zhong Dasheng and Tang Cuihua were a little nervous, and thought that Zhong Bai's leader had something to do with the door, after all, it was an old couple from the countryside, so they hid in their bedrooms without saying anything, which made Zhong Bai a little embarrassed, so he had to make a cup of tea for Tong Sifang and explained: "My parents have only moved to Tiandu not long ago, please forgive me." ”

"It's fine." Tong Sifang's attention was obviously not on this, he took a sip of hot tea and immediately handed over the test report, and after briefly explaining the test results of the routine items above to Zhong Bai, he focused on the data on the last page and said.

"The rest of the data is in the normal range for bauxite, but that's it...... Well, the radiation dose rate of this sample ore is 0.21μSv/h, and I have never seen bauxite with such a high radiation dose! Is this what makes this ore so special that you were talking about at the time? ”

When Zhong Bai heard this data, a look of surprise appeared on his face, but it quickly turned into a smile!

Sure enough, I thought it was possible at that time!

I didn't expect it to be like this!

"That's right, Professor Tong, this value is very important, it confirms one of my conjectures." Zhong Bai said to Tong Sifang with a happy face: "Looking at it now, it is absolutely impossible for the underground bauxite mine in Heyuan City to lose money again for at least ten years!" ”

"What? Where is this? Tong Sifang obviously didn't understand that the test results of this ore could be related to whether the mine was losing money, and looked at Zhong Bai with a confused expression: "Could it be that this radiated bauxite ore can still be turned out?" ”

"No, no, it's not about bauxite, I'll make a long story short." Zhong Bai didn't sell Guanzi either, and immediately said the most important point: "When I went down to the No. 2 mine that day, I found that its geological structure was somewhat special, and it seemed that in addition to the bauxite belt, there were also a large number of marble ...... nearby."

When Zhong Bai carefully told Tong Sifang about his original conjecture, the associate professor was dumbfounded!

That's right, when Zhong Bai was going down the mine with Xu Mei, the female mine manager, he once pulled Xu Mei who almost hit the rock wall, and at that time, Zhong Bai found that there were some inconspicuous marble structural features on the rock wall.

After picking up that piece of ore, he was even more sure of this, the underground bauxite mine in Heyuan City is not only bauxite, but also a large amount of marble!

At that time, due to the limited conditions, Zhong Bai was not sure of this, so before leaving, he took this ore away and handed it over to Tong Sifang for testing, and he was busy during this time, so he almost forgot about it.

However, after seeing the radiation dose rate as high as 0.21μSv/h on the report, Zhong Bai was sure that his conjecture was correct!

Here, indeed, there is a fine marble mine!

Marble is a kind of high-grade stone commonly used in the world, which is widely used, mainly used for processing into various shapes and plates, as walls, floors, platforms, columns of buildings, and is often used as a material for monumental buildings such as monuments, towers, statues, etc.

Marble can also be carved into practical works of art such as arts and crafts, stationery, lamps, utensils, etc. The texture is soft, beautiful and solemn, and the style is elegant, which is an ideal material for decorating luxury buildings and a traditional material for artistic carving.

One of the most striking features of marble is its radiation!

Because marble is formed by the deterioration of limestone in sedimentary rock by external factors such as temperature and high pressure, its main components contain reflectivity, which has also become one of the important criteria for identifying marble.

Of course, Zhong Bai from the 21st century clearly knows that marble with high radioactivity is good, but its radioactivity cannot be too high, according to the standards of Huaguo in 2020, all radiation doses higher than 0.23μSv/h are exceeded, but the test results of this ore are only 0.21μSv/h, which is just below the threshold!

After listening to Zhong Bai's long list of explanations, Tong Sifang said that he understood professionally, but he was obviously even more puzzled by the conclusion put forward by Zhong Bai just now: "Even if there is marble in Heyuan Mine, what does it have to do with them not losing money in ten years?" What does that mean? ”