According to the stratification, the mining blocks are returned from the top to the bottom. After each layer of ore is produced, the above-mentioned falling rock is moved down to fill the mining area; this is the two basic characteristics of the stratified caving method and the origin of the stratified caving name. In addition, the law has an important feature: stratified mining is carried out under the protection of artificial false tops, separating the ore from the collapsed rock, ensuring minimal ore loss and depletion from the surface.
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