Gold mine in Heilongjiang province. Mohe River gold mine gold and call Martha historic electric slag operating, there are records in the history of the Qing Dynasty. 1970s found Tuanjiegou gold 1980s discovered a mountain of old gold mine, and has large-scale development. Gold spot about the size of Heilongjiang has more than 400, of which more than 300 sand gold mine, more than 70 gold gangue. Gold production increased steadily. Gold is mainly distributed in Heilongjiang province Mohe, Huma, Aihui, Luobei, birch, Muling and East Nanjing electric slag machine, etc., formed from north to south "gold trim," accumulation area generally 500-2000 square electric slag machine model, up to 6000 square kilometers. Second, the mining method based classification process mining method we use a lot of class, for the convenience of use, 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 . Electric slag machine prices, electric slag roadway machines (certified), electric slag machine provided by Gongyi City Xinhua Machinery Factory. Gongyi City Xinhua Machinery Factory (www.gyxinhua.com) is a leader in Zhengzhou, handling equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Xinhua leader in mechanical staff warmly welcome all inquiries negotiations to create a better future, Xinhua machinery.