开矿

例句：

1. 1.The company is engaged in mining operations in the region.
   该公司在该区域从事采矿作业。
2. 2.Mining has been a major industry in this area for decades.
   几十年来，采矿业一直是该地区的主要产业。
3. 3. The miners are exposed to dangerous conditions while working underground.
   矿工在地下工作时暴露于危险条件。