Loose covering layer that consisted of water containing fine powder sand layer was encountered in the overcasting at Zhaodianzi Iron Mine.
赵店子铁矿在露天开采中遇到了含有含水粉细沙层的松散覆盖层。
Concretes of C30 and C60 were prepared with iron mine tailings as fine aggregate and coarse aggregate and with natural sand and common crushed stone separately.
分别以铁尾矿砂和铁尾矿石代替天然砂和普通碎石配制了C30和C60两个强度等级的混凝土。
In order to meet the growing wealth of heating radiators market, the company has also developed steel radiator and fine sand without high-grade cast iron decoration cast iron radiators and radiator.
为适应日益丰富的采暖散热器市场，公司还开发了钢制散热器及无砂精品铸铁散热器和高档装潢铸铁散热器。
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