A major outbreak of lead poisoning in children has been occurring in Zamfara State, Nigeria since at least March 2010, related to the processing of lead-rich ore for the extraction of gold.

至少自2010年3月以来，尼日利亚扎姆法拉州就出现了儿童铅中毒大暴发，这与从含铅丰富的矿石中提取黄金有关。

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Shaanxi Province is rich in gold resevation resources which has formed joint venture including ore prospecting, mining and mineral processing.

陕西省黄金矿产资源丰富，已形成具有一定规模的探、采、选联合产业结构。

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Experimental study on mineral processing of fine particle gold ore was carried out.

主要对微细粒金矿石进行了选矿试验研究。

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Some growth has been companies processing lower-grade ore that may not have been feasible at lower gold prices, analysts said.

FORBES: Global Output From Gold Mines In Upswing Although Some Constraints Persist