Iron: open-pit mining and underground mining

Manganese: development methods include open-pit mining and open-pit hydraulic mining

Chromium: small-scale mining for surface artisanal, semi-mechanized

Titanium: open-pit mining (including hillside open-pit mining and depression open-pit mining), followed by underground mining

Vanadium: Since vanadium is a by-product of comprehensive recovery in China, the mining of vanadium mines follows the standard requirements of the main mine mining --- open-pit mining

Copper: China's copper mining is mainly underground mining and open pit mining

Lead and zinc: Lead and zinc mines in China are mainly underground mining, a few mining areas are open-pit mining, and then converted to underground mining

Aluminum: my country's bauxite production mines are the same as foreign countries, and they are mainly open mining

Nickel: Nickel mining mainly relied on open-pit mining before the 1980s. By the end of the 1980s, the open-pit mines were successively mined and turned into underground mining.

Cobalt: Cobalt is also produced as a by-product. The mining design of the mine is mainly based on the main minerals, and there are methods such as open-pit, underground, and open-pit-underground combined mining.

Tungsten: China's tungsten mining is mainly underground mining, open-pit mining is only a small amount of surface placer. the

Tin: my country's vein tin pits mainly adopt the ore retention method, grid filling method, segmental empty field method, and segmental caving method without bottom pillars...

Molybdenum: Large-scale molybdenum deposits are most suitable for open mining due to their large reserves and shallow burial. In the future, open mining will become the main mining method for molybdenum ore in my country

Mercury: my country mainly mines underground. At present, it mainly mines shallow ore deposits, and there are many projects that use flat holes and inclined shafts to jointly develop

Antimony: mainly underground mining, open mining is rare, and only a few mines are open mining first and then converted to underground mining

Platinum group: There are no deposits for platinum in my country. Platinum group metals are recovered in the process of mining copper-nickel ore or making calcium and magnesium fertilizers

Gold: The diversification of gold mine types determines that the mining methods are also different. Rock gold is underground mining and open mining, and placer gold mines are mainly open pit mining.

Silver: The types and occurrences of silver mines in my country are diverse, and the mining methods are also different, but in general, pit mining is the main method, and there are few open-pit mines

Niobium, tantalum, beryllium and lithium: There are rare metal mines in my country, both open-pit and underground mines. But most of them are open-pit mining. Not much underground mining

Strontium: my country's strontium mines have open-pit mining and underground flat-mountain mining

Rare earth metals: mainly open-pit mining, only a few mines are underground mining