这些矿由来自被征服国家的强制劳工开采。
The mines were manned by forced labour from conquered countries.
他在世界各地探过矿，从戈壁沙漠到德兰士瓦。
He had prospected for minerals everywhere from the Gobi Desert to the Transvaal.
随着新矿投产，智利在世界铜产量中所占的份额将大幅度增长。
As new mines come on stream, Chile's share of world copper output will increase sharply.
中国发现的钴矿含锰量高，因此呈现出较弱的蓝灰色。
Cobalt ores found in China have a high manganese content, which produces a more muted blue-gray color.
我们所说的化石，指的是史前动物的遗迹，如已矿化的骨头，或留在石头上的骨头或器官的印痕。
By fossils, we mean traces of prehistoric animals such as bones, which become mineralized, or impressions of bones or organs that are left in stone.
如果有机体恰好具有矿化的骨骼并在可以被沉积物迅速掩埋的地方死亡，那么它就不太可能被完全破坏。
The chances of escaping complete destruction are vastly improved if the organism happens to have a mineralized skeleton and dies in a place where it can be quickly buried by sediment.
它可以在深山寻矿。
为什么不做些不同的事情，而要急着去找矿呢？
Why not do something different instead of rushing to the mine?
“我们兴奋地向矿道中爬去。”新华社引自他的讲述。
"We crept along the tunnel in excitement, " Xinhua quoted him as saying.
次生锰氧化物主要为锰钡矿。
通过坚持使用高质量的生石灰，大大降低了烧结矿的固体燃料消耗。
The solid fuel consumption of sinter has been decreased greatly through insisting on using high-quality calces.
矿化系统具有地幔岩浆系统，渗透性深层断层和含矿性气热热液系统三大系统。
The mineralization system has three giant system, namely mantle magmatic system, penetrability deep-fault and ore-bearing pneumato-hydrothermal system.
重型运土设备使用时，操作人员只能看到有限的区域，因此，必须指派矿口监工随时警告操作人员在操作位置上无法发现的危险。
It is, therefore, essential that a banksman be appointed to warn the operator of hazards that cannot be seen from the operator's position.
矿商的对冲仓位对金价十分重要。
看西弗吉尼亚的矿难照片。
这是一个被抛弃的玉矿。
不是发现过银和铅的混生矿吗？
是什么导致了25年发生在美国得最严重的矿难？
开采花费低廉，主要成本在于从矿到市场的运费。
It does not cost much to scrape it up; the expense comes in moving it from mine to market.
这些瓶颈已经妨碍新矿的开发和已有矿产的扩大。
Such bottlenecks have been hampering the opening of new mines and the expansion of existing ones.
铁——还有金属富集细菌造出金属矿团。
Iron — and metal-concentrating bacteria create metallic ores.
但其他征兆表明多样化经营在矿企中已经逐渐失宠。
But there are other signs that diversification is falling from favour in mining circles.
智利矿难救援人员开钻救生井开始营救33名被困矿工。
Drilling began to rescue the 33 workers trapped in a collapsed mine in Chile.
大多时候，他们从矿里探出身，满是汗水和尘垢。
Most days, they'd emerge, sweaty and dirty and dusted from coal.
其次，它能够通过矿化开始腐蚀的区域扭转早期的酸性伤害。
Second, it can reverse the early stages of acid damage by remineralizing areas that have started to decay.
我们需要开始探矿，去发现这些矿是否能合理开采。
We need to start prospecting, to figure out if this is an ore that can be processed reasonably.
我们需要开始探矿，去发现这些矿是否能合理开采。
We need to start prospecting, to figure out if this is an ore that can be processed reasonably.
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