This article concludes the test result of the internal puddler about injecting the bituminous and anthracite mixed coal.

本文归纳了国内炼铁工作者关于高炉喷吹烟无混合煤的试验结果。

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A bituminous material, such as asphalt, used to pave roads.

沥青，柏油一种含沥青物质，如沥青，用于铺路。

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Less dense types, such as sub-bituminous and lignite coal, can contain up to 50% water.

低浓度的煤炭，如亚煤烟煤和褐煤等，其含水量最高可达50%。

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On 1 September 1990, Dublin banned the sale and burning of bituminous coal.

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The majority of coal produced domestically is of the bituminous and subbituminous variety.

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Mr. Petzer "is the best coal geologist I've known, " says Mr. Slater, who is currently using him to look for bituminous coal in the Orange Free State.

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