铁矿石是钢铁生产企业的重要原材料，天然矿石（铁矿石）经过破碎、磨碎、磁选、浮选、重选等程序逐渐选出铁。铁矿石是含有铁单质或铁化合物能够经济利用的矿物集合体。
因为煤和铁矿石是原材料，蒸汽成为了工业革命的动力。
Steam became the motive force of the Industrial Revolution as coal and iron ore were the raw materials.
因此，国际贸易以原材料（如小麦、木材和铁矿石）和加工商品（如肉类和钢铁）为主。
International commerce was therefore dominated by raw materials, such as wheat, wood and iron ore, or processed commodities, such as meat and steel.
开采成本本身不高，而且外部投资正在将成本从矿山转移到市场。即便如此，澳大利亚可以以每吨25澳元的价格成本生产铁矿石。
It does not cost much to scrape it up, and the expense comes in moving costs from mine to market. Even so, Australia can produce iron ore for $25 a tonne.
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