Mining is, ultimately, an accounting profession. Tonnes moved, grams per tonne, reserves in the ground, unit cash costs, stripping ratios, mine life — the numbers are the language of the industry. Headline narratives about booms, busts and transitions come and go, but the underlying data tends to tell a more stable story about which mines matter and why. In the spirit of that discipline, this article takes a deep, numbers-first look at Australia's top mining operations ranked by output and by value — what they produce, how much of it they produce, what it is worth, and how long they are likely to keep producing.

Ranking Methodology

Two lenses are used in this article. The first is physical output — tonnes of ore or contained metal produced in the most recent full reporting year. The second is export value — the realised sale price per unit multiplied by volume, adjusted for quality differentials. These two lenses often agree (Pilbara iron ore dominates both) but sometimes diverge (lithium punches well above its tonnage weight in dollar terms). All data points below reflect the latest available company disclosures and Department of Industry, Science and Resources data.

The Top Ten by Physical Output

1. Rio Tinto Pilbara System — ~330 Mtpa iron ore

Rio Tinto's integrated Pilbara system produces more iron ore than any other mining operation in the world. The 17-mine network feeds four port terminals at Dampier and Cape Lambert, with annual ship loadings in excess of 330 Mtpa.

2. BHP Western Australia Iron Ore — ~290 Mtpa iron ore

BHP's WAIO business, comprising Newman, Area C, South Flank, Jimblebar and Yandi legacy pits, produces around 290 Mtpa and loads out of Port Hedland's Nelson Point and Finucane Island terminals.

3. Fortescue Metals Group — ~190 Mtpa iron ore

Fortescue's combined Chichester, Solomon and Iron Bridge operations produce 190–200 Mtpa.

4. Roy Hill — ~64 Mtpa iron ore

Hancock's Roy Hill ships around 64 Mtpa, with targeted expansion to 70 Mtpa through 2028.

5. Mineral Resources Onslow Iron — ramping to ~35 Mtpa iron ore

The new Onslow Iron operation commissioned in 2024 and is ramping toward 35 Mtpa.

6. BMA Bowen Basin Coking Coal — ~55 Mtpa metallurgical coal

BHP-Mitsubishi Alliance's combined Goonyella Riverside, Peak Downs, Saraji and Broadmeadow operations produce roughly 55 Mtpa of saleable metallurgical coal.

7. Mount Arthur — ~15 Mtpa thermal coal (closing 2030)

BHP's Mount Arthur is still one of the largest thermal coal mines in Australia at around 15 Mtpa, despite its announced closure.

8. Sino Iron — ~20 Mtpa magnetite concentrate

CITIC Pacific's Sino Iron at Cape Preston is Australia's largest magnetite operation.

9. Greenbushes — ~1.6 Mtpa spodumene concentrate

Greenbushes produced approximately 1.6 million tonnes of lithium concentrate in the most recent year, the highest output of any lithium mine globally.

10. Olympic Dam — ~212 kt copper, 3.3 kt U3O8, 130 koz gold, 880 koz silver

Olympic Dam is outside the top rank by simple tonnage but exceptional by volume of contained metal across four commodities.

The Top Ten by Export Value

1. BHP WAIO — ~A$45–50 billion

At 290 Mtpa and realised prices above A$150/tonne, WAIO is the single largest export-revenue generator in the Australian mining industry.

2. Rio Tinto Pilbara System — ~A$55 billion

Rio Tinto's higher-volume Pilbara operations generate even larger absolute export values, benefiting from the Pilbara Blend price premium.

3. Fortescue Combined Operations — ~A$25 billion

Fortescue's combined output, with product-quality differentials, produces around A$25 billion of export revenue.

4. BMA Coking Coal — ~A$18–22 billion

Even at cyclically lower coking coal benchmark prices, BMA's 55 Mtpa output generates material export value.

5. Roy Hill — ~A$11–13 billion

Roy Hill's 64 Mtpa at premium lump pricing generates around A$11–13 billion annually.

6. Olympic Dam — ~A$4–5 billion

Combined copper, uranium, gold and silver revenues put Olympic Dam into the multi-billion-dollar annual export bracket.

7. Cadia Valley — ~A$4 billion

Cadia's gold and copper revenues combined generate around A$4 billion at current prices.

8. Boddington — ~A$3.5 billion

Boddington's gold-plus-copper output is of similar magnitude.

9. KCGM Kalgoorlie Operations — ~A$3 billion

At current gold prices, Northern Star's Kalgoorlie Operations generate in excess of A$3 billion of revenue.

10. Greenbushes — ~A$3–5 billion

Though tonnages are modest, the premium pricing of battery-grade lithium concentrate places Greenbushes in the top ten by value.

The Top Ten by Ore Reserves (Mine Life)

Ore reserves — the portion of resources proved economically minable at current prices — are a reliable measure of long-term strategic importance.

Olympic Dam

With measured and indicated resources of around 10 billion tonnes, Olympic Dam has a theoretical mine life of well over 100 years at current throughput.

The Pilbara Majors

BHP WAIO, Rio Tinto Pilbara and Fortescue each have combined ore reserves sufficient for at least 25–30 more years of production at current rates, with additional indicated resources extending that horizon toward 2075.

Greenbushes

Greenbushes ore reserves stand at around 170 million tonnes, with additional mineral resources indicating decades of life at expanded throughput.

Cadia

Cadia's underground panel caves have reserves sufficient to maintain production through the 2050s, subject to ongoing extension permitting.

Boddington

Boddington's remaining reserves suggest mine life into the 2040s.

Productivity Metrics

Strip Ratios

Strip ratio — the ratio of waste rock moved to ore extracted — is a critical profitability driver for open-pit operations. Mount Whaleback, Roy Hill and Boddington all operate at relatively favourable strip ratios (around 1.5–2.5 tonnes of waste per tonne of ore). Deeper Rio pits are closer to 3.0. Super Pit's strip ratio has risen as the pit has deepened, but the low-grade ore is still economic at current gold prices.

Ore Grades

Cadia's underground mine produces at about 0.55 g/t gold and 0.27 per cent copper — modest grades compensated for by scale. Boddington's ore is around 0.65 g/t gold. KCGM ore averages 1.0–1.2 g/t. Greenbushes spodumene grades 2.0 per cent Li2O — extraordinary for a hard-rock lithium mine. Olympic Dam's underlying copper grades are around 1.3 per cent, and uranium grades around 500 ppm U3O8.

Processing Recovery

Recovery rates are a function of ore mineralogy and plant design. Australia's top mines achieve recoveries that are comparable or better than global benchmarks: 95–98 per cent for iron ore, 85–90 per cent for gold, 85–92 per cent for copper in typical sulphide flotation, 65–80 per cent for uranium in solvent extraction.

Unit Cost Curves

On the iron ore global cost curve, BHP WAIO, Rio Tinto Pilbara and Roy Hill all sit in the first decile (lowest cost 10 per cent). Fortescue's operations sit in the first or second decile depending on product.

On the copper global cost curve (C1 cash cost basis), Olympic Dam and Cadia sit in the first quartile. Ernest Henry in Queensland is similarly placed.

On the gold AISC global cost curve, Cadia and Boddington sit in the first quartile, while KCGM is in the second quartile and moving lower with the mill expansion.

On the lithium global cost curve, Greenbushes sits firmly in the first decile, with Pilgangoora and Wodgina in the first and second quartiles respectively.

Workforce Productivity

Output per employee is another lens on operational excellence. BHP's WAIO reports more than 30,000 tonnes of iron ore per employee per year, among the highest in the global mining industry. Roy Hill is comparable. On a contained-metal basis, Olympic Dam's block-cave productivity has risen sharply with the hydraulic-fill conversion. Fortescue's autonomous haulage fleet has driven haulage productivity up by roughly 20 per cent over five years.

Capital Intensity

Mine capital intensity — capex required per annual tonne of production — varies widely. New greenfield iron ore mines in the Pilbara are coming in at around A$100–150 per annual tonne of capacity. New hard-rock lithium mines — Kathleen Valley, Finniss — are closer to A$1,000 per annual tonne of concentrate. Cadia's panel cave extension is budgeted at about US$2.5 billion for several hundred kilotonnes of copper-equivalent production, implying copper-equivalent capital intensity that is highly competitive.

Looking Forward: Output and Value to 2030

Forecasting five years ahead, the broad direction of travel is clear. Iron ore output from the Pilbara majors will remain stable at 900 Mtpa combined, with product quality gradually trending higher as magnetite projects ramp. Lithium output could more than double as Pilgangoora, Kathleen Valley and expansions at Greenbushes and Mt Marion hit their stride. Copper output will rise materially with the Copper SA strategy and Rio's Winu project, if approved. Gold is likely to plateau at current output as mature mines deplete faster than new ones come on.

Capital Expenditure: Ranking the Biggest Investors

Which companies are plowing the most capital back into Australian mining? BHP leads by a wide margin, with Australian capex in the A$6–8 billion range annually across WAIO, Olympic Dam and the Copper SA province. Rio Tinto's Australian capex sits in the A$5–7 billion range, weighted toward iron ore replacement projects including Rhodes Ridge and the Western Range mine. Fortescue's combined mining and energy capex has hovered around A$4 billion, including Iron Bridge completion and Pilbara solar farms. Newmont's Cadia Panel Caves extension alone is a US$2.5 billion project. Mineral Resources' Onslow Iron ramp-up and Pilbara Minerals' Pilgangoora P2000 expansion represent further billions. In aggregate, Australian mining capex is expected to exceed A$40 billion a year through the late 2020s — a level of reinvestment that few other mining jurisdictions can match.

Reserve Life Disclosure and Ore Body Confidence

For institutional investors, reserve life and resource classification are the numbers that drive long-term valuation. Australian miners report reserves under the JORC Code, which has become the effective global standard for mineral resource disclosure. The discipline it imposes — independent Competent Persons, transparent modifying factors, a clear distinction between Inferred, Indicated and Measured Resources, and between Probable and Proved Reserves — is one of the under-appreciated reasons Australian mining attracts global capital. Investors trust the numbers. When BHP, Rio Tinto, Newmont or Fortescue report reserves, the market treats those figures as robust. This institutional credibility is, in its own way, a form of capital: it reduces cost of capital across the industry.

Safety Performance: The Unseen Metric

Behind the output and value rankings sits a different, no-less-important metric: safety performance. Australia's major mining companies report Total Recordable Injury Frequency Rates (TRIFR) in the 2–5 per million hours range — considerably better than the global industry average and improving year on year. Fatality rates have fallen sharply over the past two decades, though there are still fatalities, and each one triggers extensive review by the state mining regulator. The industry's continuing investment in safety management systems, fatigue management, mental-health support for FIFO workers, and technology-enabled hazard detection reflects the cultural shift from "zero harm" as a slogan to zero harm as an organisational design principle.

Conclusion

The language of mining is numbers, and in 2026 the Australian industry's numbers remain imposing. A handful of operations produce a disproportionate share of the world's iron ore, gold, lithium, copper and uranium. A similarly small group generates most of the export revenue, most of the royalties, and most of the capital reinvestment. These are the mines that determine whether Australian mining grows or stalls. The deep dive is what you see in the data: structural scale, long reserve lives, first-quartile costs, and a willingness to reinvest. Those are the real signals behind the headlines.