ore dilution
4.Successful experience is stated on reduction of ore-dilution in some uranium mine where a moderate dip and thin-bed deposit of sedimetary sandstone type has been mining.
6.The final conclusion is as follows, The oredrawing order can be used in mining the dip at slow angle and middle thickness orebodies, it is reckoned that with it being used in mines the ore actual recovery rate is increased by 5％ upon and the ore average dilution rate is spproximately reduced dy 10％.
7.The employment of dip retreat and wedge pipe bolt for roof support showed that the permissible exposed area of mine goaf increased from 50m2 to 258-500m2, thus greatly reduced the ore loss and dilution. On the basis of theoretical study and in close combination with operation practice, this paper come to a conclussion that a marked benefit can be acquired by the employment of this method.
8.How rational, high-efficient, economy, security carry on the development and utilization of resources of mineral products. It is the question that the mineral resources developer cares about together to reduce losses of resources and dilution of oer and enhances quality of ore. Filling method get heavy development with high ore recovery and low dilution.
9.A NEW APPROACH TO DETERMINING THE AGE OF HOST OF NICKEL ORE——Age Determination of plagioclase by Ar~(38) Dilution Method
