conical mine

例句：

1. 1.The mine is located in a remote area with limited access.
   这个矿位于偏远地区，交通不便。
2. 2.The mine has been closed due to safety concerns.
   由于安全问题，这个矿已经关闭了。
3. 3. The mine is an important source of minerals for the local economy.
   这个矿是当地经济的重要矿产来源。