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。
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。
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。
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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