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Cutting, punching chisel, crushing, grinding are the general four ways. Rock crusher, rock tools into the rock, and within the tool moving in front of the rock mass, is a dense core. Around the dense nuclear broken body produces a large crack. Mechanical crushing is not widely used in hard rock. It is the main reason of the tool wear. Rock crushing is mainly depends on the degree of wear and tear of rock within the content of hard minerals and particle size.

The development of human civilizations never stop and one of the main factors to determine the level of civilization is the qualification of the buildings. It is easy to tell the difference between a modern skyscraper and the ancient house.