Vale, a Brazilian mining firm, has persuaded some steelmakers to pay as much as 71% more this year for its iron ore.
巴西的矿产公司Vale要求钢铁厂今年对其铁矿石多付70%的价格。
From long time ago, because of reasons such as high mining cost, there are many limitations for the development of domestic ore mining.
一直以来，我国国产矿石因为开采成本大等原因，其开发一直受到制约。
Generally top slicing is a mining method of high cost, low productivity, and large consumption of timber as compared with other methods for mining metalliferous ore bodies.
对于金属矿的开采，一般认为分层崩落法与其他采矿法相比，是一种成本高、产量低、木材消耗量大的采矿方法。
The maximum subsidence induced by mining bedding ore(such as coal seam) is an important parameter for estimating the degree of surface movement and deformation.
最大下沉值是度量层状矿体（如煤层）开采引起的地表移动变形程度的重要参量。
Economic factors, the main influence on the performance of this area as coal, iron ore mining will change the existing land use for urban villages and mining sites or other sites.
经济因素对本区的主要影响表现为煤矿、铁矿的开采将原有的土地利用类型转变为城镇村及工矿用地或其他用地。
The technology is very useful for exploiting gentle-inclined thin bauxite body as well as for open-pit mining of iron ore.
该工艺对于缓倾斜薄矿体铝土矿、铁矿露天开采具有重要意义。
The technology is very useful for exploiting gentle-inclined thin bauxite body as well as for open-pit mining of iron ore.
该工艺对于缓倾斜薄矿体铝土矿、铁矿露天开采具有重要意义。
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