Abstract
Spatial data modelling information-based systems in current mining operations in Ghana are introduced with particular emphasis on the concepts and the hierarchical structure for three-dimensional (3D) mine. The integration of the various components of a mine is presented, and a queryable 3D mine simulation is also discussed. The conceptual and logical models of 3D tetrahedral model are discussed. This paper discusses the concepts and background knowledge for 3D mine development in general, and then goes further to demonstrate the implementation of the unified spatial data model for mine development. The results showed that a singular spatial data model can be developed to show man-made objects above and below the mine surface.