In mining, a visually perfect block model does not always represent a successful operation. Many resource models fail when real mining conditions begin: - slope instability, - unexpected dilution, - water problems, - Poor ore control, -Unrealistic mining selectivity. A reserve model should not only satisfy reporting standards.It must also survive operational reality. This is why geological interpretation, geotechnical understanding, hydrogeology, mining recovery, and operational practicality must work together from the early stage of resource estimation. The best reserve is not always the biggest number. It is the reserve that can actually be mined safely, consistently, and profitably #Mining #Geology #Nickel #ResourceEstimation #ReserveEstimation #Geotechnical #OreControl #MiningEngineering #BlockModel #MinePlanning