Modelling density for resource estimation often becomes an afterthought, or only when a consultant asks for it which often leaves companies scrambling for a balance. Significant time is devoted to grade modelling as a primary focus, but density is a critical component in converting volumetrics into tonnages and should be considered carefully. Grade, volume, and density form the three pillars that underpin any resource estimation. It is important that each component be sufficiently examined to provide meaningful results.