Semi-open pit ore without mine formation: How to manage?

Nhat Lan DNUM_BJZAEZCACB 15:54

(Baonghean.vn) - In some low-mountain districts of the province such as Quy Hop, Nghia Dan, Thanh Chuong..., there are types of stone ores such as quartz and ancient stone scattered semi-open-pit, not forming mines on forestry land or agricultural land.

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Semi-open pit ore without mine formation: How to manage?
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