Newly built coal mine's layer of coal exploration in the rear of the mine extension is to provide geological information and reduce the waste of coal resources, providing available geological data for deep mines development under the existing technical conditions.%新建煤矿后部层组补充勘探是为矿井延伸提供地质资料,减少煤炭资源的浪费,为在现有的技术条件下进行矿井的深部开发利用提供地质资料.
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