Mr Correa supports open-castmining to raise public revenues, which he says would be spent on social programmes.
科雷亚支持露天采矿，想通过它来增加财政收入，并表示这些收入将被用来支援社会福利计划。
2
Guo: it seems that refilling the open-castmining site with ground water seepage and making them a new lake system is one of the popular strategies here.
郭：似乎利用外溢的地下水将露天矿场改造成新的湖泊系统是这里很常见的策略之一。
3
The selection of dragline is a key problem to be handled when applying dragline for opencast in surface mining.