如果在你的地里发现石油或金子，你可以出售开采权。
If oil or gold are discovered under your lot, you can sell the mineral rights.
不必奇怪，因为商业矿业需要明确的持有权以及专属的开采权。
No wonder. Commercial miners want both a clear title to their holding and exclusive rights to exploit it.
他和他的合伙人大约在15年前得到了美国西部地区的部分土地开采权。
He and his partners gained rights to some land in the American West about 15 years ago.
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