Large stockpiles are inherently dynamic and non-uniform. While single-point level sensors are ideal for basic level detection and threshold monitoring, zoned 3D scanning addresses complex surface topography to deliver localized volume insights. By dividing a storage area into defined zones, RETTAR’s 3D laser scanning technology can monitor material levels, volume changes, and stockpile geometry across individual sections. This provides operators with more detailed visibility into where material is stored, added, removed, or relocated. The resulting zone-level data can support inventory tracking, material movement analysis, and historical comparison of stockpile conditions. For large open storage environments with frequently changing material distribution, combining 3D scanning with inventory management software provides a practical way to convert changing stockpile surfaces into actionable volume and inventory data.