State media said Thursday China has more than 9,000 mine waste dumps, and more than half operate without safety licenses.

官方媒体上周四报道称，中国有逾9，000座尾矿库，其中一半以上都没有安全许可证。

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Recycling the heat of the total mine water and mine waste wind back is a new topic of the energy utilization of coal enterprises.

回收利用矿井水和矿井总回风中的废热，是煤炭企业能源综合利用的新课题。

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The study of mine water source heat pump is still in its infancy domestic, and there was no report of the use of mine waste heat back to the wind.

国内对矿井水源热泵的研究尚处于起步阶段，对矿井回风废热的利用未见有报道。

youdao

The most common way of disposing of mine waste is to dump it behind a dam.

ECONOMIST: Mine pollution

Gold production dropped to 42, 723 ounces on the quarter, a steep decline from 154, 936 ounces of gold in the comparative quarter in 2011 due to the revised mine plan and an unexpected amount of till waste during the restart of the mill process in October.

FORBES: Third Quarter Operational and Financial Results