The geological signal will be clear from industrial-scale mining, damming, deforestation and agriculture, as well as the concentration of carbon in the atmosphere and nitrates in the oceans.
工业规模采矿、建水坝、砍伐和农业，以及大气中的碳浓度上升和海洋中的氮浓度增高都是明显的地质学标记。
The reasonable mining design should avoid and relieve the stress as far as possible the high degree of concentration.
合理的开采设计应尽量避免和解除应力的高度集中和发生因应力升高而引起的危险。
In the process of mining, it is very important for mining safety to monitor gas concentration.
在煤炭开采过程中，井下瓦斯浓度的测量对煤矿安全生产非常重要。
Making use of multi-well method, the quantity of rock salt mining is more, the concentration of brine is higher, and the shape of cavity is regularer than others.
由于群井连通法岩盐开采量大，采出卤水浓度大，溶腔形状比较均匀，目前成为了国内外水溶采矿的一种发展趋势。
Concentration Plant of Banshi Mining company is the unit where crushing, ball grinding and concentration duty simultaneously exist for whole company.
板石矿业公司选矿厂担负着矿业公司破碎、球磨、选矿为一体的生产任务。
Leaching from coal and coal waste stone can increase PAHs concentration in mine drainage and groundwater. Pollution of PAHs by coal mining should be attached more importance.
矿坑排水、煤矸石淋滤水及地下水中的多环芳烃与煤层及煤矸石的淋滤有关，煤矿开采引起的多环芳烃污染应引起重视。
Since the construction of Jianshan Iron Mine started in 1991, the test running of mining-concentration system had been carried out.
尖山铁矿自1991年开工建设以来，采选系统现已负荷联动试车。
Since the construction of Jianshan Iron Mine started in 1991, the test running of mining-concentration system had been carried out.
尖山铁矿自1991年开工建设以来，采选系统现已负荷联动试车。
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