The third-grade ore (some mines are divided into two levels) refers to the amount of minerals delineated by different mining projects in the mining process according to different mining methods and mining methods. It includes:
I. Exploiting the amount of minerals: Exploiting ore is part of the industrial reserves. It means that the amount of development work has been completed in whole or in part and reached a certain level of exploration (I, II, B+C; III, IV C) Industrial reserves.
2. Mining ore: The mining ore is part of the mining volume. The open mine refers to the upper part of the ore body that has been exposed. The reserves have reached the corresponding exploration type, and the equipment occupies the industrial reserves other than the minimum working plate width. The underground mine is pressed. The design completes all the mining and auxiliary projects, and the reserves reach the highest level of the corresponding exploration type and meet the industrial sequence of the mining sequence.
3. Reserve quantity: The reserve quantity is part of the mining quantity. The open pit mine refers to the mining quantity in the upper part and the side of the ore body, and the mining quantity of the first mining belt on the outer side of the step; the underground mine means the completed Designed for all mining and cutting operations, and in accordance with the mining order of the mining capacity.
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