德比尔斯最大的钻矿已经停产。
DeBeers has suspended production at one of its biggest diamond mines.
一个非洲农民听说过很多关于其他农民们因为发现钻矿而一夜暴富的故事。
An African farmer had heard tales about other farmers who had made millions of dollars by discovering diamond mines.
但是Petra认为该钻矿仍可继续开采20年，并计划每年至少开采1百万克拉。
But Petra reckons the mine still has another 20 years of production in it and plans to extract at least 1m carats a year.
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