Turn stockpile inventory into a digital balance sheet
Propeller brings survey-grade accuracy to stockpile inventory management — measure stockpiles in seconds, run monthly inventory reconciliation, and manage your “cash on hand” with total transparency.
The status quo
Manual stockpile inventory management — truck counts, visual estimates, occasional surveys — leaves your bottom line exposed to 10–15% variance. Inaccurate inventory reconciliation means you’re either over-reporting assets or running out of material when you need it most.
The Propeller shift
Achieve 97–99% volumetric accuracy. Turn monthly inventory reconciliation from a multi-day ordeal into a 10-minute digital audit — so your financial reports match what’s actually on the ground.
Stockpile measurement tool
Instantly measure any pile on-site with 1–3cm vertical accuracy using the “Magic Polygon”.
Historical volume comparisons
Compare current volumes against previous surveys or design surfaces to track depletion rates and production over time.
Inventory reports
Generate professional PDF or CSV takeoff and inventory reports for “pay app” verification and stakeholder transparency.
Density + airspace tracking
Specifically for waste and mining, track daily “fluff cover,” remaining airspace, and cell density to maximize asset lifespan.
Cut/fill to previous survey
Visualize exactly where material was added or removed between two specific dates to reconcile subcontractor work.
Tailored value for every stakeholder
Different roles need different answers. Here’s how survey-grade measurement translates into clearer costs, tighter schedules, and more defensible reporting across the team.
Project managers
Manage cost control, resource allocation, and change order management through precise pay app verification.
Foremen and superintendents
Manage cost control, resource allocation, and change order management through precise pay app verification.
VPs and owners
Achieve total financial transparency and risk mitigation by knowing exactly what assets are on the ground.
Inventory and quarry managers
Track progress toward pit plans and manage selling inventory with real-time accuracy.
The tech behind the truth
Our hardware and software work in harmony to provide a survey-grade foundation for every project.
AeroPoints®
Smart ground control points that ensure your 3D models achieve 1–3cm global accuracy for defensible volume calculations.
Propeller Platform
Your central visualization tool for measuring stockpiles, running comparisons, and exporting inventory data.
DirtMate
Real-time machine tracking that provides automated surface updates to track volume changes as they happen.
PPK Processing
Professional-grade accuracy built into your drone workflow for consistent, survey-grade results.
Propeller mobile app
Take your inventory map into the field to verify stockpile locations and site conditions on the go.
Drone hardware integrations
We don’t lock you into one ecosystem. Propeller integrates seamlessly with the industry’s leading drone hardware, ensuring you have the right sensor for the specific demands of your terrain.
Pre-construction drone survey applications by industry
Construction
Propeller gives project teams survey-grade site reality in minutes—so earthworks, quantities, and handover checks are based on what’s actually been built, not best guesses.
- Confirm stripped surfaces vs. design to validate cut/fill and mass haul assumptions
- Track earthworks progress week-over-week with defensible volumes for pay apps and change orders
- Validate subgrade/final grade, slopes, and pad elevations before concrete and handover
- Reduce rework by catching over/under-excavation early (roads, embankments, ponds, retaining areas)
- Improve borrow pit, fill area, and stockpile balance with accurate inventory on hand
Mining
Propeller turns frequent drone surveys into operational intelligence—helping mine teams reconcile movement, control costs, and keep plans on track with accurate volumes and surfaces.
- Reconcile blasted vs. moved material by comparing surfaces between specific dates
- Track ROM and product stockpiles with consistent measurement for inventory and production reporting
- Validate contractor progress and quantities with repeatable, auditable volume calculations
- Monitor haul road and pit changes over time to support planning, safety, and scheduling decisions
- Spot variance early by comparing actual surfaces to plan/design surfaces and prior surveys
Aggregates and quarries
Propeller makes it easy to measure what you have, what you’ve moved, and what you can sell—supporting faster inventory turns and more confident production and sales decisions.
- Measure inventory stockpiles quickly for accurate “on-hand” reporting and sales forecasting
- Compare inventory changes between surveys to estimate production and shipment volumes
- Reduce disputes with consistent, repeatable measurements for third-party verification
- Track pit progress toward pit plans and design surfaces to guide extraction sequencing
- Create shareable reports (PDF/CSV) for internal teams, auditors, and key customers
Waste management
Propeller helps landfill teams treat airspace like inventory—tracking daily/weekly changes so operations can protect capacity, support compliance, and extend site lifespan.
- Track remaining airspace over time with consistent volume-to-surface comparisons
- Monitor daily cover / “fluff” and compaction outcomes by comparing surfaces between dates
- Validate cell development progress and capacity consumption to support planning and reporting
- Reduce risk by identifying unexpected variance early (settlement, overbuild, missed areas)
- Share clear, defensible surface and volume reports with internal stakeholders and consultants
Turn inventory into certainty.
Stop managing “cash on hand” with estimates. Measure stockpiles in seconds, reconcile change over time, and share numbers stakeholders trust.
Frequently asked questions
With a survey-grade workflow, you can achieve 97–99% volumetric accuracy—turning inventory and earthworks reconciliation into something you can stand behind with confidence (internally and externally).
Every inventory number starts with accurate stockpile volume measurement. Propeller’s point-and-click tools let you measure any pile to 1–3cm vertical accuracy, then compare it against previous surveys to see exactly what changed. See how volume calculations work.
Stockpile inventory management is the process of measuring and tracking the bulk material stored on your site — so your reported “cash on hand” matches what’s actually on the ground. With survey-grade drone accuracy, you can measure stockpile volumes in seconds, reconcile changes month over month, and produce defensible reports for pay apps and stakeholders.
When inventory is based on truck counts and visual calls, variance can quietly creep in (often 10–15%). Propeller replaces estimates with a fast, repeatable digital audit—so your reported “cash on hand” matches what’s actually on the ground.
Instead of spending days reconciling spreadsheets and site notes, Propeller lets you measure stockpiles in seconds once your map is updated—turning month-end inventory into a 10-minute digital workflow.
You can measure stockpiles, borrow/fill areas, and movement over time—then compare current volumes to previous surveys or design surfaces to quantify exactly what changed and when.
Yes. Propeller outputs defensible numbers and professional deliverables (like PDF/CSV reports) so you can validate quantities for pay apps, reconcile contractor work, and share clear proof with stakeholders.
If the result needs to be defensible, control matters. Using survey-grade control (like AeroPoints) helps ensure your 3D model is consistently accurate—so your inventory, progress, and reporting don’t drift over time.