The calculation of resources and reserves is carried out base on several factors, namely: Sediment Geology, Exploration Method, Type of data owned, purpose of calculation, and desired level of confidence. There are several methods for calculating resources and reserves, including: Area of Influence, Cross Section, Polygon, Triangulation, Isoline, as well as several Interpolation Methods such as : Ordinary Kriging (OK), Neighborhood Nearest Point (NNP) and Inverse Distance Weighting (IDW). Therefore, it is necessary to carry out an analysis related to the method of calculating the right resources and reserves in order to produce more accurate estimates of resources and reserves. The author analyses by making comparisons between several previous studies by looking at the advantages and disadvantages of these methods based on existing literature studies.
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