A flexible mine production model based on stochastic price simulations: application at Raglan mine, Canada

Abstract The conventional economic evaluation technique that is currently used to evaluate the economic viability of mining operations has three important pitfalls. First, the probability distributions of key variables fed into the simulation process are in most part subjective and not based in a solid scientific ground. Second, the simulation method applied to generate metal prices paths results in unrealistic jumps and falls between the consecutive discrete time steps throughout the same simulated path. Third, the conventional technique implements a static production model in which the flexibility to alter the production policy is not applicable. These three pitfalls can impact the accuracy of evaluation results and consequently can lead to suboptimal production decisions. This paper presents an economic evaluation technique for mining projects based on the real options theory. This technique is based on generating future simulated metal price paths using the appropriate stochastic process for each meta...