TL;DR: A drone inspection survey in Kalgoorlie puts a high-resolution, zoom-equipped UAV against Goldfields assets — headframes, processing-plant stacks, SAG mill shells, conveyor gantries and tailings storage facility (TSF) embankments — that would otherwise need scaffold, EWPs or rope-access crews in 40-degree heat. ISS captures defect-grade imagery at 1-3 mm/pixel under a CASA Remote Operator Certificate, so KCGM, Northern Star and Evolution-scale operators get an AS-aligned condition record without standing down production or putting people at height.
Key takeaways
- A drone inspection survey Kalgoorlie operators can rely on removes working-at-height access on Goldfields headframes, calciner and roaster stacks, mill structures and TSF crests — typically cutting inspection time by 60-80% and eliminating the highest-risk tasks under the WHS (Mines) Regulations 2022.
- ISS resolves hairline cracks, weld-toe defects, coating breakdown and corrosion at 1-3 mm/pixel ground sampling distance (GSD), to the level expected of a hands-on close visual inspection under AS 4100 (steel) and AS 3788 (in-service plant).
- The Super Pit (KCGM), Kanowna Belle and Kundana headframes, the Fimiston mill and Gidji roaster, and Evolution's Mungari plant are exactly the high, hot, live and remote assets where a UAV outperforms scaffold across the Eastern Goldfields.
- Work is regulated by CASA under CASR Part 101; ISS flies on a Remote Operator Certificate (ReOC) with licensed RePL pilots, registered aircraft and aviation-endorsed liability cover, and manages all airspace coordination — including Kalgoorlie-Boulder Airport (YPKG) proximity — on your behalf.
- A single Kalgoorlie asset inspection typically runs $2,000-$6,000 depending on height, exclusion zones, required GSD and deliverable depth, against rope-access campaigns that routinely pass $30,000 once access, standby and downtime are counted.
Drone visual inspection for the Kalgoorlie Goldfields
Kalgoorlie-Boulder sits 595 kilometres east of Perth at the centre of Australia's most productive gold region. More than 130 years after Paddy Hannan's 1893 strike, the Eastern Goldfields still carry the densest concentration of gold processing infrastructure in the country — and that infrastructure is ageing, tall, and working around the clock. Headframes, crusher and mill houses, carbon-in-pulp (CIP) tank farms, elution and electrowinning buildings, leach-tank circuits, calciner and roaster stacks, kilometres of conveyor gantry, and TSF embankments all demand regular condition assessment.
A drone inspection survey is the fastest, safest way to get eyes on those surfaces. The goal is not geometry — that is the job of photogrammetry and laser scanning — it is seeing detail: fatigue cracks at conveyor truss nodes, corrosion under coating on a roaster stack, weld breakdown on a headframe sheave-deck, settlement or cracking on a TSF crest, and the dozens of other defects that drive maintenance decisions. The UAV reaches those faces in minutes, flies a repeatable path, and brings the inspector a sharper view than the naked eye ever gets from a cherry picker.
The Goldfields make the case sharper than most regions. Summer surface temperatures routinely exceed 40°C; rope-access and EWP work in that heat carries real heat-stress and fall risk. Sites are remote, so a mobilisation that stands down a plant is expensive twice over. And many operations run single-stream processing — when the Fimiston mill or a Mungari circuit stops, ounces stop with it. A drone inspection that captures condition while the plant runs is not a convenience here; it is the difference between a planned repair and a forced outage.
Key point: The Goldfields' combination of height, heat, remoteness and single-stream processing means access — not engineering judgement — is usually the bottleneck on inspection. A drone inspection survey removes the person from the hazard for the capture phase and hands the engineering call back to a competent inspector reviewing sharper evidence.
Goldfields assets and where drone inspection earns its place
The Kalgoorlie region hosts the full spectrum of gold infrastructure, from the iconic to the everyday. Each asset class has a defect profile that a UAV is well suited to capture without contact.
| Operation / asset | Owner | Inspection target | Why drone over access |
|---|---|---|---|
| Super Pit high walls & infrastructure | KCGM (Northern Star 50%) | Crest cracking, bench-edge structures, conveyor and crusher steel | 600 m+ pit depth; live haul-truck traffic on benches |
| Fimiston mill & Gidji roaster stacks | KCGM | Stack coating, refractory breakdown, mill-house steel | Hot surfaces, height, continuous operation |
| Kanowna Belle headframe | Northern Star | Sheave deck, bracing, corrosion, fastener loss | Tall steel, confined deck access |
| Kundana / East Kundana surface plant | Northern Star | Conveyor gantry, transfer towers, tank circuits | Long conveyor runs, live plant |
| Mungari processing plant | Evolution Mining | CIP tanks, crusher and mill structure, pipelines | Single central plant feeding multiple ores |
| TSF embankments & spillways (regional) | Multiple operators | Crest settlement, cracking, erosion, beach condition | Large footprint, ANCOLD monitoring obligations |
Across these, the most frequent Kalgoorlie requests are headframe and conveyor-gantry condition surveys, stack and roaster external inspections, mill-house and crusher structural checks, and TSF embankment imagery for dam-safety reporting. For operators with multiple ore sources feeding a central mill — Mungari is the textbook case — a recurring drone inspection programme keeps a consistent, time-stamped record across every structure without ever building scaffold.
Drone inspection also pairs naturally with the dimensional work ISS already runs in the region. When a survey finds a defect that needs measuring, the same team brings a total station, 3D laser scanning or photogrammetry to bear — and where a stockpile or pit needs quantifying, our UAV volumetric surveys crew is already mobilised to the Goldfields.
Method and equipment for Goldfields conditions
A drone inspection survey is only as good as its optics, its stability in wind, and the discipline of the flight. ISS plans every Kalgoorlie inspection as a series of controlled passes at a fixed stand-off — typically 3-10 m from the surface — to hold a consistent GSD, using automated structure-following missions on complex geometry so coverage and overlap are guaranteed rather than left to the pilot's eye.
- Inspection aircraft and RGB payload — high-stability multirotor platforms carrying mechanical-shutter sensors in the 20-45 MP class. At a 5 m stand-off these resolve roughly 1-1.5 mm/pixel — fine enough to identify hairline cracking, weld defects and early coating breakdown on a headframe or stack.
- Optical zoom and thermal payloads — where stand-off cannot be reduced (hot roaster stacks, energised switchyards, tight exclusion zones), a long-range zoom captures detail from a safe distance, and a radiometric thermal sensor (<0.05°C NETD) flags overheating bearings, motors, wet or blocked refractory and electrical hot spots.
- Survey control: Leica and Trimble — where defects must be located on a 3D model or compared between inspections, ISS observes ground control with the same Leica and Trimble GNSS and total-station instrumentation behind our engineering survey work, tying defect positions to within 20-50 mm.
- Heat and dust readiness — aircraft and ground gear are operated within thermal limits with battery management for 40°C-plus days; flights are scheduled for calmer morning windows when Goldfields afternoon thermals and dust are at their worst.
On site, the crew reviews imagery for focus, exposure, coverage and overlap before demobilising — re-flying a missed face costs minutes on a remote Goldfields site instead of a return mobilisation. Imagery is then processed into the agreed deliverable and a competent inspector marks and classifies defects.
Key point: Stand-off distance, not just megapixels, sets achievable detail — a 45 MP sensor at 15 m resolves less than a 24 MP sensor at 4 m. The skill is flying close and steady enough, safely, to capture the GSD the defect actually requires, which is exactly where dust, heat and live-plant exclusion zones make Goldfields work demanding.
Standards and regulatory compliance
Two kinds of accuracy matter: how small a defect the imagery resolves, and — where geometry is captured — how precisely it can be located. ISS captures 1-3 mm/pixel GSD on close-range work, resolving cracks down to roughly 0.5 mm width subject to lighting and surface, and locates georeferenced defects to 20-50 mm with ground control.
The inspection itself is conducted against the standard relevant to the asset: AS 4100 for structural steel on headframes, gantries and mill houses; AS 3788 for in-service plant external condition; AS 1418 and AS 2550 for cranes and runways; and dam-safety guidance such as ANCOLD for TSF embankments. Flight operations are governed by CASR Part 101 and its Manual of Standards, and ISS holds a current CASA Remote Operator Certificate with licensed RePL pilots and registered aircraft. Airspace coordination around Kalgoorlie-Boulder Airport (YPKG) and any mine-site aerodromes or RPAS overflight constraints is managed by ISS as part of scoping.
Work-health-and-safety obligations sit under the WA mining framework — the Work Health and Safety Act 2020 and the Work Health and Safety (Mines) Regulations 2022 — which place a duty to eliminate fall risk so far as is reasonably practicable before relying on harnesses or platforms. Removing the person from height for the capture phase is the strongest available control. Every ISS report records the standard applied, the inspector's competency and a measurement-confidence statement.
⚠️ Watch out: A drone inspection does not by itself satisfy every mandated regime. Some pressure-equipment, crane and dam-safety obligations still require hands-on or NDT inspection at defined intervals. Used well, a drone survey extends and targets those intrusive inspections — it does not blindly replace them. ISS confirms the regime that applies to your asset during scoping.
Why ISS for drone inspection in Kalgoorlie
ISS is an independent industrial surveying firm — not tied to any aircraft brand or maintenance contractor — so the inspection serves your asset, not an upstream agenda. We service the Goldfields through Kalgoorlie-coordinated mobilisation and FIFO from Perth, the same model behind our broader Kalgoorlie mining survey services, and our surveyors have worked across Super Pit bench infrastructure, narrow-vein underground headframes and central processing plants alike.
The decisive advantage is that the team flying the drone also runs our engineering and mechanical survey work. When an inspection finds a fatigue crack at a conveyor node or coating breakdown on a roaster stack, ISS can bring a total station, laser scanner or photogrammetric capability to bear without re-engaging a new contractor — turning a folder of photos into a measured, monitorable defect record. Deliverables come in your preferred format, geo-tied to your mine grid or GDA2020, and repeat inspections are compared against the previous baseline so deterioration is measured, not guessed.
Cost is project-specific and quoted fixed-price after a short scoping call. As a guide, a single Goldfields asset typically runs $2,000-$6,000, with controlled airspace or live-plant approvals adding $500-$2,000, a thermal pass adding $800-$1,500, and FIFO or remote-site travel charged at cost. Against a rope-access stack campaign that routinely exceeds $30,000 once access, standby and downtime are counted — and puts people at height — the payback usually lands on the first inspection, before a single defect is found.
Frequently asked questions
How quickly can ISS mobilise a drone inspection survey to Kalgoorlie?
For Goldfields work we coordinate through Kalgoorlie and FIFO from Perth, typically mobilising within days of a confirmed scope. A single asset — a headframe, stack or transfer tower — is usually half a day on site plus one to three days of review, with reports delivered in three to five business days. For multi-site programmes across several operations we schedule recurring visits to minimise mobilisation cost.
Can you inspect the Fimiston mill or a Mungari circuit while it is running?
Usually, yes. The capture is non-contact, and most live Goldfields plant can be inspected without standing down production provided an exclusion zone is maintained around people and operating equipment. Hot roaster and calciner stacks and energised switchyards are flown from a safe stand-off using optical zoom or thermal payloads, so you keep the circuit turning while we capture condition.
How does ISS handle Kalgoorlie's heat, dust and airspace?
Aircraft and batteries are managed within thermal limits for 40°C-plus days, and flights are planned for calmer morning windows to avoid afternoon thermals and dust that degrade imagery. ISS holds the CASA Remote Operator Certificate and manages all CASR Part 101 compliance, including coordination around Kalgoorlie-Boulder Airport (YPKG) and any mine-site aerodrome or overflight constraints — you simply provide site access and inductions.
Does a drone inspection satisfy our TSF and pressure-equipment requirements?
It satisfies many condition-monitoring and visual-inspection needs — TSF embankment imagery supports ANCOLD-aligned dam-safety reporting, and AS 4100 / AS 3788 structural and plant assessments are well served. However, some dam-safety, pressure-equipment and crane regimes still require hands-on or NDT inspection at set intervals. A drone survey is best used to extend those intervals and target intrusive inspection where it is genuinely needed; ISS confirms the applicable regime during scoping.
Request a quote
If access, height, heat or downtime is making your Goldfields structural and asset inspections slow, expensive or hazardous, a drone inspection survey is very likely the safer and cheaper path — and across Kalgoorlie's headframes, stacks, mills, conveyors and TSF embankments the payback usually lands on the first inspection. Tell us the asset, the operation and the defects you care about, and ISS will scope a fixed-price drone inspection survey, recommend the right payload and deliverables, and manage every part of the CASA compliance. Call 0407 057 015 to speak with a surveyor who understands Goldfields gold operations.
Industrial Spatial Solutions — Goldfields experienced, CASA-certified, data-driven. See also our Kalgoorlie mining survey services and national drone visual inspection capability.