The Creator of the Graciousness gave the human being the mineral resources that can be seen everywhere.Such as various types of aggregate that were widely used in construction and other infrastructure construction, minerals that used in the chemical, energy, smelting and other fields. These ore resources are constantly being mined and used, and now they are becoming less and less scarce. So we should cherish these mineral resources.
Why is the ore expensive?
1.Ore mining is not only difficult but also expensive.
At present, there are three commonly used mining methods,open stope mining method,block caving mining,filling mining. No matter what kind of way you need to invest a lot of manpower and material costs. In addition, due to the complex mining environment, mining work is often accompanied by dust explosion, gas explosion and other risk factors, mining is extremely difficult.
2. Ore is a one-time energy that cannot be regenerated.
Mines include coal mines, metal mines, non-metallic minerals, building materials, chemical mines and so on. But no matter what kind of ore formation cycle is very long, the once again forming time generally need tens of thousands of years. So in the scientific scope, these minerals are often defined as non-renewable energy.
3. Mining will bring environmental pollution that is difficult to repair.
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