去年全球矿业公司共开采了2686吨黄金。
矿业公司正在艰难地提高全球最大铁矿石出口国澳大利亚的产出，而中国国内开采的铁矿石质量未能改善。
Mining companies are struggling to increase iron ore output in Australia, the world's biggest exporter, while the quality of Chinese domestic iron ore production fails to improve.
俄罗斯矿业在芬兰海湾的领海内和其他几个国家都持有勘探证，但将这些矿物开采到地面上经济上还不具可行性。
Russia mines some in territorial waters in the Gulf of Finland and several other countries hold exploration licences, but bringing them to the surface has never become economic.
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