The results have offered security guarantee condition when opencast working switches to underground working in the mine.
探测结果，为该矿由露天开采转入地下生产，提供了安全保障条件。
The purpose of the paper is to discuss the relationship between underground right and ground right of reclaimed land in the process of opencast working of coal mine.
研究目的：探讨煤矿露天开采过程中复垦土地地上权和地下权的关系。
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