ABSTRACT
Open pit configurations are based on mining blocks which are to be removed and on the addition of haul roads that provide access to the mining blocks. Mining block models are based on a rectangular array of mining blocks which are individually defined by their dimensions and location. The process of mine planning based on block models must include a gridded surface topography which can be intersected with the block model in order to determine the location of the pit crest and identify the volume of waste, ore or air in each block. Mining revenues are based on the calculation of net block values. When the mining block model is intersected with the grid or volume model of the mine openings, the volume and tonnage of ore and waste, mineral recovery and net block value within the opening can be calculated and used to determine the economic feasibility of the project.
