Is a professional production of anthracite coal sales of the manufacturers.

是一家专业生产销售烟煤无烟煤的厂家。

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This model is used in forecasting coal sales, and the accuracy is considerably improved.

将模型应用到原煤销售量的预测中，其精度明显提高。

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The paper mainly deals with the analysis and design of coal sales management system of YuanBaoShan open pit coal mine.

本文主要对元宝山露天煤矿煤炭销售管理系统进行了分析及设计。

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Coal sales from wholly owned mines in 2009 were 10 million tons, down about 1 million tons from 2008.

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In 2010, Massey saw an uptick in coal sales to utility customers, a trend that we expect to persist through our forecast period.

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Fitch Credit Ratings estimates that this is whittling coal sales by about 63 million tons per year, equivalent to 6% of 2010 consumption, with new EPA regulations further reducing sales by another 5%.

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