At old mining sites, waste and tailings ponds could be processed for their remaining resources.

在旧矿场，废物和尾矿池可以处理剩余资源。

In order to keep this water source pure, these tailings ponds have to be carefully designed and managed, so that mining chemicals don't leach into the ground water below and pollute the watershed of the Continental Divide.

为了保持这个水源的纯净，这些尾矿池必须经过精心设计和管理，这样采矿化学品才不会渗入下面的地下水中，污染大陆分水岭的分水岭。