TL;DR: A volumetric survey at Olympic Dam measures the quantity of material held in run-of-mine and product stockpiles, the leach and tailings facilities, and active earthworks across BHP's integrated copper-uranium complex 560 kilometres north-west of Adelaide near Roxby Downs. Industrial Spatial Solutions delivers a volumetric survey in olympic-dam using CASA-certified drone photogrammetry, LiDAR and GNSS, achieving 1-3 per cent volume accuracy with same-day-to-48-hour reporting tied to the mine's control network — without putting crews onto unstable surfaces.
Key takeaways
- Olympic Dam produces roughly 200,000 tonnes of refined copper, around 3,500 tonnes of uranium oxide, plus gold and silver each year (BHP, 2024); reconciling that output against stockpiled feed, concentrate and tailings depends on regular, defensible volume measurement.
- A drone-based volumetric survey in olympic-dam typically achieves 1-3 per cent volume accuracy on stockpiles against a defined base surface, captured in a single morning's flying rather than days of ground survey, and reported within 24-48 hours.
- The tailings storage facility carries uranium-bearing material, so each lift volume and freeboard check feeds compliance under the SA radiation framework as well as routine TSF management — measurement no operator can afford to estimate loosely.
- ISS mobilises calibrated crews from Adelaide, driving 6-7 hours up the Stuart Highway or flying into the Olympic Dam aerodrome, and flies under CASA Part 101 rules with the controlled-airspace considerations the aerodrome demands.
- Indicative TSF and stockpile volumetric campaigns run from roughly AUD 3,000-9,000 plus transparently scoped remote-site mobilisation, with monthly cycles common for active operations.
Volumetric surveying for Olympic Dam and the Gawler Craton
Olympic Dam is not a single open pit with one stockpile to count; it is a vertically integrated metals complex in the South Australian outback, where material is measured at almost every step of the flowsheet. Ore is extracted underground through a decline reaching beyond 800 metres, milled in the concentrator, smelted to blister copper on site, and refined to 99.99 per cent cathode in the tankhouse, with uranium oxide, gold and silver recovered as by-products. Between those steps sit run-of-mine stockpiles, concentrate and product stocks, reagent and consumable piles, leach residues, and a tailings storage facility that grows lift by lift. Each is a quantity that someone in production, finance or compliance needs to know to within a few per cent, and each is what a volumetric survey in olympic-dam sets out to measure.
A volumetric survey captures the full three-dimensional surface of a stockpile, pit, void or earthwork, then calculates the enclosed volume against a defined base — a surveyed ground plane, a previous surface, or a design surface. The number that comes out is only as good as two things: the density and accuracy of the captured surface, and the rigour of the base it is measured against. On a remote, continuous, high-value site like Olympic Dam, getting both right is what separates a defensible reconciliation figure from a guess. ISS combines volumetric surveying methods — drone photogrammetry, aerial LiDAR and GNSS — selected to suit the surface, the access constraints and the accuracy the deliverable requires.
This page covers where volume measurement matters across Olympic Dam, the method and equipment ISS uses, the standards the work is held to, and why operators here choose a specialist over a generalist survey firm. For the wider regional picture, see our Olympic Dam survey services.
Where volumetrics are used across Olympic Dam
Run-of-mine and product stockpiles
The concentrator is fed from surface stockpiles that buffer underground production against milling rate. Knowing the tonnage held in a ROM pad or a blended feed stockpile lets planners balance mill feed, and lets finance reconcile what was mined against what was milled. A single drone flight captures every pile on a pad in one pass, calculating volumes to within 1-3 per cent against a surveyed base, and converting to tonnes using a measured or assumed density. Repeating the survey on a monthly cycle turns a snapshot into a movement record, exposing drawdown errors and survey-to-survey drift before they distort the production balance.
Tailings storage facility and leach residues
The TSF is the most consequential volume on the lease. Tailings from a uranium-producing flowsheet are deposited in lifts, and each lift must be measured for deposited volume, remaining airspace, beach geometry and freeboard. Drone photogrammetry and LiDAR measure the full facility surface without sending personnel onto soft, potentially unstable deposits, delivering lift volumes for deposition planning and compliance reporting. Leach residue stacks and process-residue stores carry the same logic: measure remotely, report against the previous surface, and keep an auditable record of how the facility has grown.
Pits, voids and earthworks
Surface earthworks — borrow pits, infrastructure cut-and-fill, road and pad construction, borefield corridors — all generate cut-and-fill quantities that drive contractor payment and progress claims. Volumetric survey against a design surface verifies what was actually moved, protecting the operator from over-claiming and giving the contractor an independent record. Underground, cavity monitoring system scanning captures stope and void volumes that no aerial method can reach, feeding stope reconciliation and geotechnical assessment for the sub-level open-stoping operation at depth.
Reagent, consumable and concentrate stocks
Bulk consumables — lime, sulphur, grinding media stocks held in the open — and copper concentrate awaiting transport are all working capital sitting on the ground. Periodic volumetric survey converts those piles into verified inventory figures for stock-take and audit, without the safety exposure of manual measurement on a steep or hot pile.
Key point: On an integrated copper-uranium site, a volume is rarely just a number for production. The same stockpile or TSF figure may serve mill planning, financial reconciliation and a uranium-licence compliance return at once, so the survey has to be accurate, dated and traceable to control — not a rough estimate.
Method and equipment
Method selection at Olympic Dam is dictated by surface type, access and the accuracy the deliverable demands, and crews mobilise self-contained because the nearest replacement instrument is hours away. The volumetric workflow follows four disciplined stages.
- Ground control and planning. Before flying, ISS establishes or checks GNSS ground control points across the survey area, tied to the site control network and your coordinate system (mine local or GDA2020). Control density and placement are planned around the surface, because edge definition and base-surface accuracy drive the final volume far more than raw point count.
- Capture. RPAS (drones) carrying photogrammetric or LiDAR payloads fly the stockpiles, TSF and earthworks; on the open, satellite-friendly terrain of the Gawler Craton, GNSS/RTK pickup supplements or replaces aerial capture on smaller or access-restricted piles, and cavity monitoring systems capture underground voids.
- Processing. Imagery and point data are processed into a dense surface model, checked against control, and the enclosed volume is calculated against the agreed base surface — surveyed plane, previous surface or design surface, clearly stated in the report.
- Deliverables. Volume reports with method and accuracy statement, surface models, contours and difference plots, and data in your required format (Surpac, Vulcan, Deswik, 12d Model, AutoCAD or LAS/LAZ point cloud) so figures drop straight into mine-planning and reconciliation workflows.
A well-executed drone volumetric survey in olympic-dam holds 1-3 per cent volume accuracy on stockpiles; GNSS pickup typically achieves 3-5 per cent depending on point density and edge capture. Equipment includes phase-based 3D scanners for plant and void detail, robotic total stations for control where GNSS is unavailable, GNSS/RTK receivers for surface control and pickup, and CMS for stopes. Crews calibrate to manufacturer schedules and verify on site, because thermal effects and the 45-degree summer heat of the Gawler Craton are real on long sightlines, and dust on a working pad degrades photogrammetry if capture is not planned around it.
| Do | Don't |
|---|---|
| Define and state the base surface (plane, previous, or design) before measuring | Report a volume without saying what base it was calculated against |
| Use drones and LiDAR to measure the TSF and unstable piles remotely | Send personnel onto soft tailings or steep stockpiles to take measurements |
| Tie every survey to the site control network for a defensible, dated record | Treat a one-off flight as a reconciliation baseline without control |
| Plan capture around dust, heat and the aerodrome's controlled airspace | Fly photogrammetry over a dusty active pad in poor light and trust the result |
Standards and compliance in South Australia
Volumetric survey at Olympic Dam sits under a heavier regulatory load than most Australian sites because uranium is part of the product mix. Work is governed by the South Australian mining and safety framework and, additionally, by the radiation regime that applies to a uranium-producing operation.
- CASA Part 101 / RPAS operating rules: govern all drone capture for stockpiles, the TSF and infrastructure corridors, including the controlled-airspace considerations around the Olympic Dam aerodrome. Flights are conducted by remotely piloted aircraft operators holding the appropriate accreditation.
- SA Radiation Protection and Control Act 2021 and ARPANSA codes: govern work around radiation-controlled areas and the uranium-bearing tailings facility. ISS crews complete the site's radiation safety inductions and work to BHP's radiation management plan.
- Work Health and Safety (Mines) Regulations (SA): mandate monitoring of structures and ground where failure is a risk; TSF lift and embankment volumetrics support these obligations alongside geotechnical monitoring.
- Surveying Act 1992 (SA) and ICSM standards: set the datum, accuracy and competency framework; volume deliverables are referenced to AS/ISO accuracy classes and registered to the site control network so figures are engineering-grade and auditable.
Indicative commercial ranges help operators budget. Drone TSF and stockpile volumetrics are often AUD 3,000-9,000 per campaign depending on area, number of piles and deliverables; a larger combined surface campaign across multiple pads sits higher, and an underground void scanning scope is quoted separately. Remote-site mobilisation, travel and accommodation are scoped transparently against your schedule rather than buried in the rate.
Key point: A volume is only as trustworthy as the control and base surface behind it. ISS establishes survey control first and states the base surface on every report, so a stockpile or TSF figure stands up in a production reconciliation, a financial audit or a uranium-licence compliance return alike.
Why ISS for volumetric survey in Olympic Dam
South Australia's resources sector is smaller than Western Australia's or Queensland's, but is defined by high-value, technically demanding assets, and Olympic Dam is the most demanding of them all. The site runs continuously, the terrain is remote and hot, and the tailings facility carries a uranium-bearing licence — a combination that asks more of a survey crew than a routine stockpile count.
ISS brings surveyors who understand integrated metals operations and remote South Australian work, not generalist cadastral or construction crews. We arrive self-contained from our Adelaide coordination base — 6-7 hours by road up the Stuart Highway or fly-in via the aerodrome — with calibrated backup instrumentation, current mine-site and radiation inductions, and CASA-compliant drone procedures. We measure the TSF, stockpiles and earthworks remotely to keep people off unstable ground, we tie every survey to your control network, and we deliver volumes in the formats your mine-planning and reconciliation systems already use. For operators running multiple sites across Olympic Dam, Carrapateena and Prominent Hill in the Gawler Craton, ISS offers service agreements with priority scheduling, so the same crews who know your control network and your stockpile pads return each cycle and your survey-to-survey figures stay comparable.
Frequently asked questions
What volume accuracy can ISS achieve at Olympic Dam?
A well-executed drone volumetric survey in olympic-dam holds 1-3 per cent volume accuracy on stockpiles against a defined base surface; GNSS pickup typically achieves 3-5 per cent depending on point density and edge capture. Accuracy depends on ground control, surface model resolution, edge definition and the chosen base surface — all of which we plan deliberately. Every survey is tied to the site control network and reported to AS/ISO accuracy classes, so the figure is defensible for reconciliation and compliance.
How quickly can ISS deliver stockpile and TSF volumes?
Capture for a pad of stockpiles or a TSF surface is usually a single morning's flying, with reporting within 24-48 hours of leaving site; rush processing is available when a figure is needed for a month-end reconciliation or a compliance deadline. Crews mobilise from Adelaide by road in 6-7 hours or fly into the Olympic Dam aerodrome, and we schedule around your operational and ventilation cycles so measurement does not interrupt production.
Can you measure the tailings facility safely given the uranium licence?
Yes. Drone photogrammetry and LiDAR measure the full TSF surface from the air, so no one walks onto soft, potentially unstable, uranium-bearing tailings. Our crews complete the site's general, mine and radiation safety inductions and work to BHP's radiation management plan within controlled areas, consistent with ARPANSA codes and the SA Radiation Protection and Control Act 2021, while all flying is conducted under CASA Part 101 with the aerodrome's controlled airspace accounted for.
Do you measure underground voids as well as surface stockpiles?
Yes. Surface stockpiles, the TSF and earthworks are captured by drone, LiDAR and GNSS, while underground stope and void volumes are captured with cavity monitoring system scanning that reaches ground no aerial method can. Covering both surface and underground volume in one engagement, all referenced to the same control network, is a core reason operators choose ISS for this site.
Request a quote
If you operate or contract at Olympic Dam and need defensible volume figures — stockpile reconciliation, TSF lift and freeboard, earthworks cut-and-fill, or underground void measurement — talk to a surveyor who understands integrated copper-uranium operations and remote South Australian work.
- Call 0407 057 015 — discuss your stockpiles, schedule and deliverables with someone who knows Olympic Dam and the Gawler Craton.
- Receive a scoped proposal — method, base-surface definition, accuracy and reporting formats, a safety and radiation plan, and a fixed price tailored to your site and logistics.
- Mobilise to site — we coordinate inductions, travel and accommodation to fit your operational and reporting timeline.
For ongoing work across Olympic Dam, Carrapateena and Prominent Hill, ask about an annual service agreement with priority scheduling and dedicated crews. See our Olympic Dam survey services and the complete guide to volumetric surveying to get started.
Industrial Spatial Solutions — integrated-site capable, remote-site disciplined, defensible to the cubic metre.