"BOSS, do we want to go down? The ground sent me to ask about our destination." Adrian turned around and asked Yang Jing.

Although Papua New Guinea is poor, except for a few big cities in the country that have regular airport towers, most airports in other places are simple airports and there is not even a tower. Therefore, when renting helicopters in Papua New Guinea, there is almost no need to report or apply to the local air control department.

There is also only one simple airport here in Porgela, but it is the location of a gold mine after all, and it is controlled by Rio Tinto and BHP Billiton, two mining behemoths, so there is still air traffic control here.

Yang Jing thought for a while and turned his head to Guo Xiaoxiang and said, "Or come down and take a look? I have never seen how this kind of open-pit mine is mined."

Guo Xiaoxiang shrugged her shoulders and said indifferently: "Whatever you want, I can do whatever you want."

So Yang Jing nodded at Adrian and signaled them to fly down and dock.

Looking down from the air, the entire Porgela is divided into two parts, one is a residential area, and the other one with a larger area is the mining area. It is worth mentioning that the altitude of the mining area is more than 2,300 meters, but the depth of the huge main mine is more than 600 meters. In other words, because of that mine, the average altitude of the mining area has been lowered a lot.

Moreover, to the west of the mining area is a mountain with an altitude of more than 3,000 meters. In addition, the largest mine was dug downward for six or seven hundred meters, making the mining area look extremely steep.

The residential area is located on the east side of the mining area, on both sides of a simple road that stretches for several kilometers, with a large number of houses scattered. Most of these houses are where miners live. As for the center of the residential area, a small town is formed.

At the beginning, Chris requested to land in the mining area so that the boss and the others could go directly to visit the mining area. However, the air traffic control did not agree, so Yang Jing and the others could only land in the north of the small town of Porgela.

At this time, the rain in the sky had stopped, and the air was filled with rich moisture, which made people feel uncomfortable. Fortunately, the altitude of this place is relatively high, and the sun is not visible in the gloomy sky, so the temperature is still relatively low, unlike the sauna days in most areas below that are unbearable.

The town is very quiet. A road winding from the east turns several bends and reaches into the depths of the town.

As a mining expert hired by the company, Liu Zhaoming is very familiar with Papua New Guinea, especially the major mining areas in Papua New Guinea. He has visited all the major mining areas.

"Mr. Yang, Mr. Guo, this town and the surrounding houses are a town developed based on the Porgela mining area. The population is about 20,000, most of them are workers and their families in the mining area. This highway was built from Mount Hagen and is the main national highway route of Papua New Guinea."

"Teacher Liu, why are you so familiar with this place?" Yang Jing was also very curious about how this gentle and gentle middle-aged man was so familiar with this place.

Liu Zhaoming said: "Actually, two years ago, I came to this mining area with an inspection team organized by a domestic department for a period of time. At that time, I lived here for more than 20 days, so I am still familiar with it. But now in the past two years, the town does not seem to have changed much."

"Yeah, Teacher Liu, have you ever inspected here?" Yang Jing was quite surprised, "So Teacher Liu, do you think about this place?"

"Opinion? Haha, what do you think?" Liu Zhaoming shook his head with a smile while walking, "If you have an opinion, it can only be said that God favors this country too much. Just like this gold mine, Mr. Yang, guess what the average gold ore grade in this mining area can reach?"

Although Yang Jing does not know very professional mining knowledge, he is now the major shareholder of Rongbao Mining, so he has learned a lot of mining knowledge by himself in the past two years, and he still understands some basic terms.

"Can it exceed 1 gram/ton?" Yang Jing thought for a while, guessed a relatively high number and said.

This number is definitely very high for the average grade of a gold mine.

Generally speaking, the industrial grade of gold ore is generally 0.3-0.5 grams/ton, that is, if the gold content in the ore reaches 0.3-0.5 grams/ton, the ore can be mined and profits will be generated. With the development of smelting technology or the increase in the price of mineral products, the minimum industrial grade of ore will decrease.

At present, the average grade of many gold mines in China will only be able to reach the standard of 0.3 g/ton, while the average grade of some famous large gold mines in the world is mostly below 1 g/ton. For example, the copper and gold mine with the largest gold reserves in the world, which is also located in Irian Island and is less than 700 kilometers away from the Porgela Gold Mine. The average grade of its gold ore is only 0.703 per ton.

The Australian Olympic Ba uranium copper gold mine, which ranks second in the world's gold reserves, has an average gold grade of only 0.328 grams per ton.

In addition, the world's third-ranked copper and gold mine is located in the Fibor Mine in Alaska, USA. The average grade of gold ore is only 0.35 grams per ton.

However, these three top three large mines in the world are all metal-associated ores, and gold ores are just one of them. Even if the gold reserves of these large mines are above 2,500 tons, gold is only one of the output of these mines. More mineral products include silver, copper, molybdenum and other associated ores.

But even so, the average grade of gold ore in this companion ore can exceed 0.3 grams per ton, which is definitely very good.

So Yang Jing guessed a 1 gram/ton, and he already thought he was not low. After all, the Porgela Gold Mine is a silver-gold companion mine. In addition to having more than 400 tons of gold reserves, it also has more than 1,000 tons of silver reserves.

Liu Zhaoming smiled and shook his head and said, "Dr. Yang, you guessed it's a bit low."

"Ah? This is still low?" Yang Jing was a little unbelievable.

"Yes, the number you mentioned is really a bit low. I have a set of numbers here, listen to it. The Porgela Gold Mine was completed and put into production in 1990 and has been in production for 28 years. From 1990 to 2015, the gold mine produced a total of 19.36 million ounces of gold, which is about 602 tons of gold. The gold mine mentioned outside still has 400 tons of gold reserves, which means that the remaining gold reserves of the gold mine currently retain resources. This gold mine has been produced for 28 years, and the average grade of gold ore in the entire gold mine is as high as 4.4 grams per ton."

This number made Yang Jing and Guo Xiaoxiang take a breath. Guo Xiaoxiang asked in disbelief: "Teacher Liu, does this gold mine really have such a high average taste?"

Liu Zhaoming nodded and pushed the glasses on his nose. "When I came to inspect the past year, I was shocked by the time I learned that the highest gold ore in this gold mine actually exceeded 72.6 grams per ton. But I have to admit that both the Porgela gold mine and the Glasberg copper and gold mine to the west of this gold mine are all great wealth that God has given to this island."

After a pause, Liu Zhaoming continued: "In fact, the average grade of gold ores in the two largest gold mines in Papua New Guinea is very high. Even the copper ore of Lishire Island located on Lishire Island has an average grade of gold ore as high as 2.732 grams per ton. In other words, if we can find another gold or a companion mine such as copper or gold ore, the grade of gold ore in it will definitely not be much lower."

Liu Zhaoming's words reminded Yang Jing of the flash of green light that he saw from the mountain range when he was about to arrive in Porgela. Although he just glanced at it and did not observe it carefully, he felt that the green light that appeared in the mountain range seemed to be no less than the green light revealed by the Porgela gold mine.

Is there a gold mine in that place that is similar to this Porgela gold mine?

Thinking of this, Yang Jing asked Liu Zhaoming: "Teacher Liu, then do you think that if you could find another gold mine in the Male Mountains, would you be of high quality?"

Liu Zhaoming pondered for a moment and said, "I dare not be very sure of this, but based on the reasons for the formation of the Porgela gold mine, I am seventy-sixth of sure. If I can really find another gold mine in the Male Mountains, its grade should be similar to that of the Porgela gold mine."

Liu Zhaoming pushed his glasses and pointed to the surrounding mountains and said: "The Porgela Gold Mine is located in the New Guinea orogenic belt. The orogenic belt is located on the northeastern edge of the Australian plate and is the boundary between the Indo-Australia plate and the Pacific plate and a series of small plates such as the Caroline plate and the Philippines plate. The orogenic belt began to form after the Triassic-Jurassic, and in the Mesozoic era, it underwent a series of arc-continental collision processes to form the current form of the orogenic belt. In other words, Porgela is a typical shallow-low-temperature hydrothermal deposit. In this area, once gold mines can be discovered, it is almost a low-temperature hydrothermal deposit like the Porgela gold mine..."

Liu Zhaoming said a lot of professional terms. Although Yang Jing didn't understand much, looking at Liu Zhaoming's confident expression, Yang Jing knew that what he said was not false.

This Liu Zhaoming was a real mining expert invited by Guo Dabao from Huaxia University of Mining and Technology. Since he dared to say this, he was confident enough to prove that what he said was not groundless.

So, after visiting this gold mine, go back to the area with green light that I just discovered!

If a gold mine of the same level as the Porgela gold mine is discovered, Rongbao Mining can enter another precious metal mine with huge profits!
Chapter completed!