This paper addresses the Integrated Electrical Drill Rig Dispatching and Drilling Coordination Problem (IDRDCP) in open-pit mining operations, combining machine assignment across multiple patterns with drilling scheduling within each pattern. We propose a constraint programming formulation incorporating spatial and temporal complexities, aiming to minimize total lateness across all blast holes and patterns. Computational experiments were conducted on diverse instances with varying numbers of patterns, drill rigs, and blast holes to evaluate the model's performance. Results demonstrate the effectiveness of our approach in terms of solution quality and resource utilization across different problem configurations. The model shows promising capabilities in handling both simple and complex priority relationships while maintaining computational tractability. This work contributes a comprehensive approach to drill rig management at a detailed operational level, capable of handling challenging scenarios and optimizing drilling operations under tight constraints.