The minister for natural resources in Lesotho praised the productivity of the mine, one of the highest in the world at more than 3,000 meters (10,000 feet).
莱特森矿海拔3000多米(1万英尺),是世界上地势最高的钻石矿之一。 莱索托自然资源大臣高度评价了它的生产能力。
In the paper, the utilizations on natural energy resources in underground metal mine ventilation.
通过实例,对金属矿山通风中自然能源利用问题进行了分析和论述。
A mine, oil well, quarry or other place of extraction of natural resources;
矿场、油井、采石场或其他自然资源的开采场地;
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