mining district
4.OXYGEN ISOTOPE COMPOSITION OF ANHYRITE IN EARLY STAGE VEINS, MINRAL PARK PORPHYRY SYSTEM, WALLAPAI MINING DISTRICT, ARIZONA, U. S. A.
5.APPLICATION OF OPTIMUM SEGMENTATION METHOD TO THE STRATIGRAPHIC DIVISION OF THE LANGSHAN GROUP IN THE DONGSHENGMIAO MINING DISTRICT,INNER MONGOLIA
6.The policy decisions were worked out on the basis of the digital elevation model (DEM), analysis of space, use of space database technology and theory of policy decision system, preserved space data of subsidence area of mining district and data experience of land reclamation, so as to acquire the rational land reclamation plans of the mining district and to provide information for environment evaluation.


