不像其他大多数金属一样，铁矿石的价格是由每年的各个矿主和单个进口国之间的磋商确定的下来的。
Unlike most other metals, the price of iron ore is fixed by annual contracts negotiated by each miner and individual importing country.
眼前山铁矿主采区为节理裂隙比较发育的急倾斜厚大矿体，矿岩具有良好的可冒性。
The ore body in main mining area of Yanqianshan iron mine has a structural character of easy-caving due to a dense joint distribution and a high Angle and thick ore-body.
本文对白云鄂博铁矿主采场不同岩性中的预裂爆破进行了探讨，通过计算给出了一些基本的爆破参数，并详细介绍了预裂爆破施工组织过程。
Some basic blasting parameters are given by calculating and the process is introduced on the discussion of pre-crack explosion of different rock character.
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