The Effect of Cut-off Grade and Mine Value Optimization on Mining Projects in South African Mines: A Mini-review

 Abstract — - Mineral reserve is an economically minable part of measured or indicated resources and all have varying distributions in terms of grade. The focus of this review is to briefly cover information related to the positively skewed ore reserves which have a portion considered negative in value in contrast to the holistic viewpoint of the ore reserve. Since the negative portion of the ore reserve is small and mining companies are not considering it, there could be a hidden loss that becomes significant once the market trend is unfavorable and increasing costs. The determination of an adaptive cut-off grade will expose sections in the ore body which are negative in value and provides opportunity for optimization. There is extensive research conducted in the aspects of cut-off grade and mine value optimization with researchers discovering a variety of problems which my research wants to address and investigate as far as mine value is mining and refinery balancing cut-off grade are the other three balancing cut-off grades. The grade distribution of the mined material