以下为句子列表：
英文: Abstract: The original mineral of Dading Iron Mine was processed by the technique which included pre-classification, dry magnetic separation to discard dirt, magnetic separation of the coarsely ground ore, scondary grinding and secondary magntic separatio
中文: 文摘:采用预先分级、干式磁选抛废、粗磨磁选、粗精矿再磨再磁选的工艺流程处理大顶铁矿原生矿，提高了原矿处理量，降低了磨矿成本，获得铁精矿品位65.54％、铁回收率94.11％的技术指标.
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英文: Article 13： The duration of validity of the exploration and survey permit or the mining permit upon the transfer of the mineral exploration right or mining right shall be the remaining time period of the duration of validity of the original mineral explor
中文: 第十三条：探矿权、采矿权转让后，勘查许可证、采矿许可证的有效期限，为原勘查许可证、采矿许可证的有效期减去已经进行勘查、采矿的年限的剩余期限。
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