THE CHAIN THAT HOLDS IT TOGETHER.

There is a tendency, in any discussion of Queensland’s coal industry, to speak in aggregates — in annual tonnages and export values, in royalty billions and budget forecasts. These figures are meaningful. But they obscure something equally important: the physical reality of how coal moves from its point of extraction, hundreds of kilometres inland, to the holds of a bulk carrier in the Coral Sea. The supply chain that accomplishes this is not an afterthought. It is the industry. Without it, the resource remains inert geology, locked in the Bowen Basin’s ancient seams, unrecoverable in any commercially meaningful sense.

The Queensland export coal supply chain comprises five interdependent logistical networks: the specific coal mines — covering coal recovery, wash-plant, stockpiling, mine loops, and out-loading; the below-rail infrastructure providing train path availability; the above-rail infrastructure of rolling stock and operations; and the port infrastructure encompassing in-loading loops, stockpiles, ship loaders, and berths. To that list one might add the ships themselves and the international markets at the chain’s far end. Each link is distinct. Each is capable of constraining the whole. And each carries its own institutional history, regulatory architecture, and set of competitive pressures.

Understanding this chain — in its physical dimensions, its engineering logic, and its structural vulnerabilities — is essential to understanding Queensland’s economic condition. This is the infrastructure through which the state’s largest export revenue is earned, the corridors along which its fiscal position is partly determined, and the system whose long-term viability is now subject to genuine uncertainty as global energy markets evolve. The permanent civic record of this industry — the kind that should endure across changes of government, shifts in market conditions, and technological transformation — is being anchored at coal.queensland, the onchain namespace for Queensland’s coal identity layer.

FROM THE SEAM: EXTRACTION AND PREPARATION.

The chain begins not at a port, but at a pit face or longwall in the central Queensland interior. The Bowen Basin covers an area of over 60,000 square kilometres in Central Queensland, running from Collinsville to Theodore. It contains about 70 per cent of Queensland’s coal — deposits of Permian age that are the most important commercial deposits in the state, producing almost 100 per cent of the state’s coking coal and 60 per cent of its thermal coal. Within this province, coal is won by two primary methods: open-cut mining, which uses draglines and truck-and-shovel fleets to strip overburden before exposing coal seams; and underground longwall mining, where a mechanised shearer traverses a coal face hundreds of metres wide, allowing the overburden to collapse safely behind it.

Raw coal, as extracted, is not yet a marketable commodity. The coal delivered from the mine that reports to the coal preparation plant is called run-of-mine, or ROM, coal — the raw material consisting of coal, rocks, middlings, minerals and contamination. Before it can be transported or sold, it must pass through a Coal Handling and Preparation Plant, known in industry as a CHPP. This is a crucial step for black coal, especially metallurgical coal, to remove impurities like rock, soil, and other minerals, using gravity separation processes — including jigs and dense-medium systems using magnetite slurries — to separate coal from waste based on density differences. The more of this waste material that can be removed from coal, the lower its total ash content, the greater its market value, and the lower its transportation costs.

The CHPP is, in this sense, where the commercial product is actually created. A mine that produces metallurgical coal of 8 or 9 per cent ash — the kind demanded by Japanese and Korean steel mills operating to tight blend specifications — achieves that quality through careful preparation, not merely through what nature deposited. Once processed, the clean coal is stockpiled at the mine site, awaiting outloading into rail wagons. Coal is then typically subject to further processing at the CHPP before being transported via conveyor, truck, rail or ship — or a combination of these — to the buyer. For the overwhelming majority of Queensland’s export coal, the next movement is by train.

THE RAIL NETWORK: ARTERIES OF THE EXPORT SYSTEM.

The Central Queensland Coal Network is the circulatory system of the state’s coal export trade. Operated and managed by Aurizon Network Pty Ltd, it is the largest coal rail network in Australia, comprising four major coal systems: Blackwater, Moura, Goonyella, and Newlands. This 2,670-kilometre multi-user track network serves Queensland’s Bowen Basin coal region, with the Goonyella Abbot Point connecting system providing additional routing flexibility. The network is used almost exclusively for mine-to-port transport — a specificity of purpose that defines its engineering character and its economic logic.

Each of the four major systems serves a defined corridor. The Goonyella system, which opened on 5 November 1971 and runs for 477 kilometres, is the primary route for export coal to the terminals at Hay Point and Dalrymple Bay. The Goonyella supply chain is one of the largest and most complex mine-to-port supply chains in the world, in which thermal and metallurgical coal from mines in the Bowen Basin is transported by train to three marine terminals. The Blackwater system, meanwhile, serves the southern Bowen Basin and connects mines to the export terminals at the Port of Gladstone. It has the largest route length of the four coal systems and carries the second-highest tonnages on the network, after the Goonyella system.

Both the Blackwater and Goonyella systems are electrified. The Blackwater and Goonyella coal networks were electrified using 25 kV AC, with the programs completed in 1986 and 1987 respectively. This electrification — a substantial capital investment at the time — underpins the operational economics of the corridor: electric traction delivers lower per-tonne haulage costs over long distances compared with diesel, and the system’s continued operation has depended on that cost advantage. Aurizon operates Australia’s largest electrified rail freight system, the Central Queensland Coal Network, and that infrastructure is critical to export industries and local communities alike.

The network’s northern dimension is served by the Newlands system, which connects mines to the Port of Abbot Point, and by the Goonyella to Abbot Point (GAP) connecting line. As coal mine development in the Bowen Basin accelerated in the early 2000s, Abbot Point was seen as having available loading capacity that could be used if mines on the Goonyella system could access it — resulting in the Northern Missing Link extension of 68 kilometres to North Goonyella coal mine, opening in 2012. The Moura system, connecting the southern coalfields to Gladstone, completes the configuration. Together with the Blackwater line, the Moura system forms what is known as the Capricornia Coal Chain.

Aurizon Holdings Limited, formerly named QR National, was in 2015 the world’s largest rail transporter of coal from mine to port. Formerly a Queensland Government-owned corporation, it was privatised and floated on the Australian Securities Exchange in November 2010. That privatisation marked a structural shift in how the rail network is governed: from a public utility to a regulated private monopoly, with the Queensland Competition Authority setting access terms and tariffs. The transition has had ongoing consequences for how costs are allocated across the supply chain, and for the balance of power between miners, rail operators, and port terminal owners.

THE PORTS: WHERE THE CHAIN MEETS THE SEA.

Queensland’s export coal reaches the global market through three principal port precincts: Hay Point, Gladstone, and Abbot Point. Of these, Hay Point is the most significant in volume terms, and the most closely identified with the Bowen Basin’s premium metallurgical coal.

The Port of Hay Point comprises two separate coal export terminals: Dalrymple Bay Coal Terminal (DBCT), which is leased from the State Government by Dalrymple Bay Infrastructure, and Hay Point Coal Terminal (HPCT), which is owned by BHP Billiton Mitsubishi Alliance and operated by Hay Point Services. The two terminals share the same coastal precinct, approximately 38 kilometres south of Mackay, but operate independently, serving different customer groups and different mine catchments.

Dalrymple Bay Coal Terminal has a particular history that reflects the Queensland Government’s long-standing role in shaping export infrastructure. Original investigations into the establishment of a second coal terminal at the Port of Hay Point commenced in the 1970s, and it was not until 1979 that the Queensland Government appointed consulting engineers to design a coal handling facility, with the aim for it to be operational by 1983. Two major milestones occurred in 1981: construction commenced and DBCT P/L, the company, was formed. The construction of the 3,850-metre jetty started at the shore and the wharf end simultaneously. The first unloaded coal train occurred on 3 October 1983, and the first ship loaded occurred on 7 November 1983 at DBCT.

From those origins, the terminal has expanded continuously. Over time, the terminal has undergone seven expansion phases, increasing capacity from its original 14.55 million tonnes per annum to the current integrated supply chain capacity of 84.2 million tonnes per annum. Coal arrives by train, is stockpiled in a yard covering close to 67 hectares, then moves via conveyor to the loading infrastructure. The coal is transferred via conveyor from the stockyard to shiploaders 3.8 kilometres offshore, where shiploaders load it onto customer vessels, which transport the coal to ports around the world. The terminal supplies coking coal, PCI coal and thermal coal from Queensland’s Bowen Basin coalfields to the world export market, accounting for approximately 7 per cent of total global seaborne coal exports and 21 per cent of world metallurgical seaborne coal exports.

The Port of Gladstone provides the second great coal export corridor. The Port of Gladstone is Queensland’s largest multi-commodity port and the fourth largest coal exporting terminal in the world. Coal makes up 70 per cent of total exports from the port, with around 50 million tonnes of coal passing through the port each year. The RG Tanna Coal Terminal — originally known as the Clinton Coal Facility — was approved for construction in 1976–77 when BHP advised it had secured long-term contracts for the sale of coking coal to Japanese steel mills, and in its first full year of operation in 1980–81 the terminal exported 4.3 million tonnes of coal. About 70 per cent of coal handled at the port is metallurgical coal — coking coal that is an essential part of the steelmaking process.

Abbot Point, at the northern end of the Bowen Basin and proximate to the Galilee Basin — subject of one of Australia’s most contested resource development debates — provides the third export gateway, connected to the Newlands rail system. The port is administered by North Queensland Bulk Ports Corporation, the same statutory authority that oversees Hay Point, and its strategic significance has grown as the Carmichael mine project brought new export volumes online.

THE ECONOMICS OF FLOW: COORDINATION AND CONSTRAINT.

The complexity of this system is not merely physical. It is institutional. Historically, there has been a tendency for individual logistics networks to self-manage with limited recognition of the interdependencies between the links — a paradigm reflected in different contracting frameworks between the mines and other parties within the supply chain, leading to embedded risks in the total supply chain. The mine, the below-rail infrastructure, the above-rail operator, and the port terminal are typically governed by different corporate entities, with different financial incentives, different maintenance schedules, and different risk tolerances.

Most Queensland export coal sales are based on free-on-board (FOB) terms — and for the purpose of supply chain planning, the chain is considered to extend from the mine pit to the ship hatch. This has important implications. Under FOB arrangements, the coal buyer takes responsibility for freight once the coal is loaded at the terminal. The seller — the Queensland miner — bears all costs from extraction through to loading, including rail haulage charges, port access tariffs, and the cost of delays. When rail congestion or port queuing creates vessel demurrage, those costs fall on the mine’s operating account.

The Goonyella supply chain alone involves thermal and metallurgical coal from 31 mines in the Bowen Basin transported by train to three marine terminals, with the coal network delivering more than 150 million tonnes per year using over 6,000 railcars. The scheduling challenge this represents is extraordinary: trains must be dispatched, sequenced, and routed across hundreds of kilometres of shared track, their loads matched to vessel berth bookings at terminals operating continuous loading programmes. The margin for disruption is narrow. Cyclones, flooding, equipment failure, or mine outages can cascade rapidly through the system — a characteristic of tightly coupled infrastructure that Queensland has experienced repeatedly.

The question of whether this system operates at sufficient efficiency has been a recurring preoccupation of Queensland resource policy. Australia exports around 352 million tonnes of coal annually through nine separate terminals scattered along the New South Wales and Queensland coastlines connected by nine different rail infrastructure operators — and those ports are operating at just 65 per cent capacity utilisation overall. The implication of underutilisation is that fixed costs are spread across fewer tonnes, raising per-tonne costs and eroding competitive position relative to other major export nations. The structure of the Queensland network — with its four rail systems, three major port precincts, and multiple terminal operators — carries similar systemic risk, particularly as overall export volumes soften.

DECARBONISING THE CORRIDOR.

One dimension of the supply chain that has emerged as commercially significant in recent years is its energy footprint. The electrified rail systems of central Queensland draw power at scale, and the source of that power has become a matter of direct contractual interest.

Aurizon’s Central Queensland Coal Network is to be powered by renewable energy following an agreement between the state government-owned generator CleanCo and the freight operator, with CleanCo to supply Aurizon with renewable energy from the MacIntyre Wind Farm in the Western Downs, the Kaban Wind Farm in Far North Queensland, and the Woolooga Solar Farm north of Brisbane. The arrangement underpins continued operation of Australia’s largest electrified freight rail system while cutting emissions across Queensland’s export supply chains.

CleanCo is also partnering with Dalrymple Bay Infrastructure and Dalrymple Bay Coal Terminal, embedding renewable energy across the Mackay region’s critical mining and export infrastructure — from rail to port — as Queensland moves toward a lower-emission industrial future. The logic here is neither sentimental nor ideological: it reflects direct commercial pressure from international buyers, particularly the Japanese and Korean steel mills that are Queensland’s most important long-term customers, who increasingly require suppliers to demonstrate credible Scope 3 emissions reduction pathways. A supply chain that can demonstrate lower embodied emissions in its logistics infrastructure is, all else being equal, a more competitive supply chain.

Battery-electric and hydrogen fuel cell locomotives remain in demonstration phases, with commercial availability not expected until after 2030. University of Queensland research with Aurizon shows that different rail corridors will require different solutions: battery power for shorter routes like the Gladstone–Moura corridor; hybrid battery-hydrogen systems for longer routes. The challenge of decarbonising the above-rail component is thus a medium-term engineering problem with significant capital implications — one that the industry must navigate alongside the more fundamental question of long-run demand.

SCALE, REVENUE, AND THE FISCAL BOND.

The aggregate output of this supply chain, and the fiscal implications that flow from it, are worth holding in view when considering its significance. Queensland is a global leader in coal exports, supplying almost 200 million tonnes in the 2024 financial year to more than 30 countries, including China, Japan, India, and key European markets. The Bowen Basin, stretching across 650 kilometres of central Queensland, hosts 85 per cent of the state’s coalmines and produced 195 million tonnes of export metallurgical coal to global markets in the 2024–25 financial year, making it the epicentre for Australia’s met coal exports.

The fiscal bond between this supply chain and the Queensland state budget is intimate and well understood. Queensland’s state government expected to collect A$5.5 billion in coal royalties over the 2024–25 financial year, down from A$10.5 billion in the previous year, in part driving a budget deficit. The value of Queensland coal exports fell from AU$52.3 billion in 2024 to AU$38.9 billion in 2025 — the first time since 2021 that the value of coal exports had been less than AU$40 billion. These figures illuminate what the supply chain ultimately delivers: not merely coal at a terminal, but revenue into a state government account, supporting services and infrastructure for Queenslanders who may never set foot in the Bowen Basin.

Queensland’s coal royalty structure is a tiered system tied directly to price. The royalty system consists of six progressive tiers: a base rate of 7 per cent applies to the first $100 per tonne of coal value, rising through successive tiers to a top rate of 40 per cent for any value above $300 per tonne. The royalty rate is indexed to coal prices; as coal prices retreat from the highs seen in 2022, so too does the overall royalty rate applied. The supply chain, in this sense, is also a royalty-generation mechanism — and the efficiency with which it operates has direct fiscal consequences.

AN INFRASTRUCTURE OF PERMANENCE AND CIVIC RECORD.

What the mine-to-market supply chain ultimately represents is a form of industrial permanence — a commitment, embedded in physical infrastructure worth tens of billions of dollars, to a particular mode of economic participation in the global commodity system. The infrastructure associated with a new coal mine includes a coal handling and preparation plant, rail spur, train load-out facility, coal conveyor, stockpiles, electrical transmission lines, water pipeline, and access roads. These assets are not ephemeral. They are built to last decades. A new steelmaking coal mine such as Olive Downs, opened in 2024, is expected to produce up to 15 million tonnes of steelmaking coal each year over the next 80 years. The rail corridors that connect these mines to port were built in some cases more than fifty years ago and remain the principal arteries of the export system today.

The chain is also a statement about economic geography. It defines which communities in central Queensland exist in their current form — the mining towns of Moranbah, Dysart, Blackwater, and Emerald whose populations, services, and civic infrastructure are calibrated to the rhythm of coal production and haulage. It defines the industrial identity of Mackay, whose regional economy is inseparable from the operations at Dalrymple Bay and Hay Point. It shapes the fiscal condition of Gladstone, whose port is the fourth largest coal export terminal on Earth. These are not abstract relationships.

The Bowen Basin is the engine room of Queensland’s resources sector, supporting nearly 44,000 people in jobs along the supply chain. That workforce — mine operators, train drivers, port terminal workers, maintenance engineers, logistics coordinators, geologists, and safety personnel — is distributed along the full length of the chain, from the pit face to the shiploader. Their conditions, their communities, and their futures are bound up in the operational integrity and long-run viability of the system described in this essay.

Queensland’s coal export supply chain is, above all, an expression of industrial will — the resolve, over many decades, to build and sustain infrastructure of remarkable scale in a remote interior province, and to connect that province reliably to global markets. Whether the chain continues in its present form through the energy transition, contracts as met coal demand eventually softens, or transforms as new technologies alter the economics of both extraction and transport, the record of what was built and how it functioned deserves permanent documentation.

That record — the infrastructure, the institutions, the fiscal relationships, and the engineering achievements — belongs in a civic repository that persists across political cycles and market conditions. It is for this reason that coal.queensland exists as the onchain address for Queensland’s coal identity: a permanent, verifiable anchor for the history, the data, and the civic significance of an industry whose supply chain has quietly shaped this state more than almost any other single system of physical infrastructure.