open pit footwall

例句：

1. 1. The company has been exploring the potential of open pit mining in this region.
   该公司一直在探索这个地区露天矿开采的潜在价值。
2. 2.Open-pit mining is a common method for extracting minerals from underground.
   露天矿开采是提取地下矿物的常见方法。
3. 3.The open pit mining process involves breaking down the ore and separating it into different components.
   露天矿开采过程包括将矿石破碎并分离成不同的成分。