A retrospective cohort study was conducted among iron and steel workers working in 18 iron and steel making and rolling factories from 3 Chinas iron and steel group corporations.

采用回顾性队列研究对国内三个钢铁集团公司所属的18个炼铁、炼钢和轧钢厂进行了流行病学研究。

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Material Tracking can be used in several industries including mining, blending and shipping, iron and steel making, ore processing and concentration, metals refining and chemical batch operations.

物料跟踪软件可以被用在许多行业中，包括采矿业、混和物加工和海运、钢铁制造、矿石加工和浓缩、金属冶炼和化学制品批量生产。

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Wukong: king, why not making iron and steel with these ironstones? It's profitable!

悟空：国王，你们为什么不用这铁矿来炼铁炼钢啊！能赚大钱啊！

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It'll mean making deep changes to old industries like Wuhan Iron and Steel, reforming China's giant state-owned enterprises.

BBC: Can Wuhan's state-owned giants adapt?

Upstream producers such as Brazil's Companhia Vale do Rio Doce (CVRD), the world's largest producer of iron ore and pellets, are trying to get into the business of making quality steel.

ECONOMIST: On a roll | The