"Black gold" into a "cabbage." Selling a ton of coal still earn less than six dollars, and some companies are producing a loss of more than 20 yuan per ton of coal. This is the industry spread the word. "This year's coal market prices came earlier than expected, more urgent, falling fast, falling deep, coal production and operation problems worse." This year, the Shanxi Coal Industry Office in the relevant documents on the operation of the province's coal economy case description. "This year, coal prices decline much, down about 7 percent year on year in port areas Cinder machine installation, this is the result of recent price increases slag machine debugging, a decline elsewhere in more than 20%, and now are in the country since the past three years The low level. "Zhuo record information coal analyst Liu Dongna said. Second, the mining method based classification process mining method we use a lot of class, in order to facilitate the use of the tunnel Cinder machine, it is necessary to classify. And there are also a variety of classification methods, and former general classification is pressed by a different management approach to classification. Because ground pressure management method is based on the physical and mechanical properties of rock and minerals as unfounded, while mining methods and conditions, composition closely related elements, such as the recovery process, and ultimately will affect the safety, efficiency and economic effects of mining method . Cinder Cinder machine debugging machine _ _ Zhong Cinder machine provided by Gongyi City Xinhua Machinery Factory. Gongyi City Xinhua Machinery Factory (www.gyxinhua.com) strong, credible, in Zhengzhou, Henan handling equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Xinhua machinery and you hand into the brilliant, for a better future!