Risk decision on 0.5 ore blending
                        
                        (1.Beijing Graduate School; China University of Mining and Technology; Beijing 100083
2.University of Science and Technology Beijing; Beijing 100083)
                        2.University of Science and Technology Beijing; Beijing 100083)
Abstract: On the basis of research information about the ore blending of a large iron opencast in China, risk of 0. 5 ore blending and optimum risk- benifit analysis decision are discussed.
                        Key words: ore blending riskbenifit analysis decision
                    
 
        