By Kerina Taylor Accurate coal resource modelling depends on representing geological conditions as faithfully as possible. But in structurally complex deposits, conventional modelling methods can struggle to capture the relationships between coal seams and internal waste, introducing inaccuracies that affect mine planning and grade control.  Multi-ore-percent block coding offers a targeted approach to preserving geological detail in these challenging environments, while retaining established modelling workflows elsewhere in the deposit.  The limitations of conventional seam modelling  Gridded seam models (GSM) are widely used in thermal coal resource modelling. They preserve seam geometry, align with stratigraphic interpretations, and support established resource and…