Mine production forecast is pertinent to mining as it serves production goals for a production period. Perseus
Mining Ghana Limited (PMGL), Ayanfuri, deterministically forecasts mine production which sometimes result in significant
variation from the actual production. This paper developed an innovative stochastic discrete event simulation model to
predict production for two excavators at a pit in PMGL site using Arena® Software. Time and motion studies of the shoveltruck
system were conducted to build the stochastic model and production was predicted for four weeks. The results showed
a total average production of 210 414.86 BCM ± 3 301.59 BCM at 95% confidence interval. The total average production
reflected a variance of 2.34% from the actual production of 215 341 BCM. The deviation was low as compared to the
deterministic planned production variance which was 5.44%.