Because of the power outage, it is very dark underground, and even if there is a miner's lamp overhead, in this kind of mine fifty or sixty meters underground, if a timid person is absolutely scared.

According to the explicit regulations of the explorer company, when going down the mine, it is necessary to ensure that there are two people at the operation site at the same time. Stanton.

The two of them walked down the inclined pavement shaft, and when they reached the mining roadway, they followed the distribution map of the entire mine to the farthest excavation front. Fortunately, the fat mine owner is still quite concerned about this mine, even in the underground mining roadway, the situation in the roadway is still very good. Not to mention, these back steps in the roadway are very clean, except for some large equipment that is inconvenient to transport out, other messy small things are rare.

However, the further he walked, the more messy the roadway began to look, and to Tang Feng's surprise, the farthest excavation roadway did not go all the way down, but when it reached the deepest point, it began to gradually go up again.

This is rare, but not impossible, as the underground mining face is mined according to the movement of the veins, so the horizontal position of some mining tunnels is not set in stone.

Although Tang Feng has also gone down several wells before, but this farthest excavation face has not been visited by all the staff of the Explorer Company. Stanton came to do it, and Lee wanted to work with Tim as an analyst.

The next shaft was troublesome, and the mine stretched for kilometers underground, and the farthest point alone would have taken nearly an hour to walk. The alleyway was very quiet, and the footsteps of two people could be heard far away. Fortunately, it was two people walking together, otherwise, it would be difficult for ordinary people to endure the loneliness of walking alone in this dark well for an hour. And both Tang Feng and Tim were used to this situation, so the two of them talked and laughed along the way and soon came to the end of the farthest excavation roadway.

Because he has been walking upward, Tang Feng estimated that the depth of this place from the surface was estimated to be about twenty meters, and based on the distance traveled, it was inferred that this place should have been out of the coverage of the small hill. If the fat mine owner is willing to mine pyrite, it is possible to mine it in the open pit here.

Here, there is no concrete support in the seven or eight meters of roadway, only two or three wooden supports play a temporary supporting role, and at the end of the roadway is a small pile of mined ore, and most of the cross-section of the excavation is exposed to the light.

From here, it can be clearly seen that the veins are different, in the seven or eight meters of roadway without concrete support, the rock layer is the color of the dark and slightly reddish, which is the typical color of hematite ore, and in the exposed half of the cross-section, it shines from time to time with a trace of yellow light, which looks like a gold mine at first glance.

Both Tang Feng and Tim are very experienced surveyors, so when you look at that shining light, you know that you have encountered a large amount of pyrite on this excavation face. Pyrite is often mistaken for gold because of its light brass color and bright metallic luster, so it is also known as "fool's gold".

Pyrite is the most widely distributed sulphide in the earth's crust. In magmatic rocks, pyrite is fine disseminated, which is the product of hydrothermal action after the magmatic period. In contact metasomatic deposits, pyrite is often symbiotic with other sulfides and is formed in the later stages of hydrothermal interaction. In hydrothermal deposits, pyrite is symbiotic with other sulfides, oxides, quartz, etc.; Sometimes huge accumulations of pyrite are formed. In sedimentary rocks, coal measures and sedimentary deposits, pyrite is produced as agglomerates, nodules or lenses. In metamorphic rocks, pyrite tends to be a new product of metamorphism.

Based on the geology here, it is very normal for pyrite to appear, so Tang Feng and Tim did not make a fuss. And they're here to take samples of pyrite and other rock formations, bring them back for analysis, and then use the data to prove whether the hematite has been exhausted.

In addition, it is also necessary to demonstrate whether these pyrite mines have mining value based on the analyzed data. This is also one of the main tasks of this downhole. Because pyrite has been found on other excavation faces, and this excavation roadway originally followed the main vein of this iron ore, the data analyzed from the samples collected here is the most probative.

The reserves of a vein are always limited, and no matter how long you dig it, there will always be a day when it will be finished. According to the analysis of pyrite samples and rock samples taken from other excavation faces, it has almost been concluded that this hematite vein has no mining value, and this time to collect samples from the farthest excavation roadway is actually just to cover the conclusion reached a few days ago.

This kind of conclusion, although cruel, has no way, and it is the truth. Of course, if the fat mine owner is willing to spend a huge amount of money to mine this pyrite with a particularly high sulfur content, it is not up to the explorer company to decide, and the task of the explorer company is to provide the fat mine owner with all kinds of data, including whether the discovered pyrite is worthwhile.

However, judging from the data obtained in the past few days, the sudden appearance of pyrite should not have the value of mining. This is definitely not good news for the fat mine owner, which is why the fat mine owner has been in contact for the past two days to prepare to sell the land.

Tang Feng and Tim each took out two batteries and a small inverter from their backpacks, connected them with wires, and then connected them to the miner's lamp on the wall of the tunnel, and suddenly, the stored electricity in the battery was turned into light by the miner's lamp.

After all, the miner's lamp above the heads of the two people is still too small, and if it is used for lighting, it still needs this kind of miner's lamp that needs 220 volts to enjoy it.

With ample lighting, the two men casually turned off the miner's lamp overhead, then picked up the guy and began to take the required samples from the excavation cross-section.

This kind of work is also individual work, after all, it is necessary to mine samples from hard rock, although it is not much, but it can be collected completely by hand without automatic mining equipment, and it is also quite a bit of the style of wielding a pickaxe to dig iron ore in "Legend of Blood".

After working for half an hour, the older Tim couldn't stand it anymore, because there was no ventilation, the temperature in the well was still not low, Tang Feng said okay, a stick boy in his twenties, there was no problem with physical strength, but Tim, who was over forty years old, was not a luxury, and physical strength was now a luxury for him.

PS: In the first week of the new book, there will be two updates a day for the time being, brothers and sisters will support Xiaomo more, and Xiaomo will strive for three changes a day next week!