The paper analysis correlativity between the total coal consumption and the main industry correlated with coal of our country,according to the data of the total coal consumption and every walk of life correlated with coal in our country in recent years.

The comparison between coal consumption over 1995-2002 and the prediction show that the models enjoy a high precision and are practical,and the forecast results are reliable.

The causality relationships analysis of GDP among world main coal consumption countries;

Study on the application of ARIMA Model in forecasting China’s coal consumption;

Analysis of co-integration and causality between coal consumption and economic growth in China;

Strengthening management and controlling to improve the coal quality;

This paper analyzes coal quality by the application of mathematical statistical techniques,in the light of the actual situation of Huaibei Mining Group.

The paper describes how to enhance the coal quality by intensifying the site control and increasing the quality sense.

Through the deep analysing to the methods for estimating coal reserve, the theoretical suitability is pointed out for each kind of the methods to the variation of coal thickness, which has significance in selecting reasonably the methed to estimate coal reserve.

The formula of geological blocking often used to estimate coal reserve is defective in evaluation of precision because the premise to use its formula is that the parameters of coal deposite must be at entire random, which is not conformable to reality.