Mine surveying is the application of surveying science and geodetic principles to measure, record, and manage the spatial geometry of a mining operation, including surface topography, underground workings, ore volumes, equipment positions, and the progress of excavation against mine design plans. Mine surveyors use a combination of traditional total stations, GPS/GNSS systems, laser scanning (LiDAR), drone-based photogrammetry, and underground cavity monitoring sonar to capture accurate three-dimensional data of mining environments. In open-pit bauxite and iron ore mines, surveyors measure bench progress, blast hole collar positions, stockpile volumes, and pit limit compliance. In underground gold and diamond operations, surveying is critical for accurately recording development headings, stope profiles, ore extraction volumes, and the structural integrity of excavations. Survey data feeds directly into the reconciliation of actual ore mined against resource models, a critical process for identifying geological variance and improving mine planning accuracy. Statutory survey requirements under most mining regulations mandate that mine workings be surveyed at defined intervals and that accurate mine plans be maintained and submitted to the relevant regulatory authority. Modern mine surveying increasingly integrates real-time data into mine management software platforms.
