A proposed spatial plan covering approximately 126 square kilometres across the cities of Bor and Zaječar would reshape eastern Serbia’s mining and metallurgical economy through 2050. The plan brings together three large components: development of the Lower Zone of the Čukaru Peki underground deposit, a new copper-and-gold mine at Malka Golaja, and a new smelting complex supported by transport, power, water and waste-management infrastructure.
The first implementation period extends to 2035, giving the programme a scale and duration unusual even for Serbia’s mining sector. It is not yet an approved construction package or a final investment decision. The early public-review process establishes the planning territory and the framework within which technical studies, environmental assessments, land acquisition and permitting can proceed.
The distinction matters because the project is being discussed as a single industrial expansion while its assets sit within different corporate structures. Serbia Zijin Mining operates the Čukaru Peki mine, while the legacy Bor mining and smelting system is held through Serbia Zijin Copper, in which Zijin Mining controls 63% and the Serbian state retains 37%. A separate Malka Golaja company was established with 95% owned by Serbia Zijin Mining and the remaining interest held by Zijin-controlled Sino-Zijin Resources.
These structures determine who finances each asset, where revenue and costs are recorded and how the Serbian state participates economically. The state’s minority ownership in Serbia Zijin Copper does not automatically give it the same interest in Čukaru Peki or Malka Golaja. The spatial plan may integrate the physical infrastructure, but investors and policymakers must still distinguish the legal and financial boundaries.
Zijin’s expansion since entering Serbia has already transformed the country’s export profile. Reported cumulative investment across its Serbian operations reached approximately $3.27 billion by April 2025, far above the initial investment expectations associated with the acquisition of the former RTB Bor assets. Copper and gold have become central contributors to industrial output, exports and regional employment.
The new plan would extend that transformation. Čukaru Peki’s Upper Zone is known for high-grade copper and gold mineralisation, while the deeper Lower Zone offers a much larger but technically more demanding resource. Deep underground development requires extensive shafts or declines, ventilation, dewatering, crushing, material handling, tailings systems and ground-control infrastructure. Capital intensity rises sharply with depth and scale.
Malka Golaja adds another growth option. Zijin has described it as a relatively high-grade copper-gold discovery within the Timok metallogenic belt. The deposit’s eventual economics will depend on resource definition, metallurgy, depth, recovery rates and infrastructure. Establishing a dedicated corporate vehicle indicates strategic intent, but it does not replace a bankable feasibility study.
The proposed new smelter may become the programme’s largest environmental and energy decision. Serbia’s existing Bor smelting complex has undergone modernisation, but further mine expansion could exceed its optimal capacity or create a case for a new metallurgical location outside the urban area. Moving future smelting away from densely populated parts of Bor could reduce some local exposure, although it would transfer land, water and emissions pressures to another site.
No final CAPEX has been disclosed for the integrated programme. On an indicative engineering basis, a deep underground mine of this scale could require €1.2–2.0 billion, a new smelting and refining complex €1.0–1.6 billion, and associated tailings, power, water, transport and environmental infrastructure another €800 million–€1.5 billion. That places the possible long-term investment envelope around €3–5 billion, excluding financing costs and some land or resettlement expenditure. These are scenario estimates rather than company guidance.
Such a programme would rank among the largest industrial investments in the Western Balkans. It could expand Serbian copper production, lift exports and strengthen the country’s relevance to European supply chains. Copper demand is being supported by grid expansion, renewable energy, electric vehicles, data centres and defence investment. European policy increasingly treats secure access to copper and other strategic materials as an industrial-security concern.
Serbia’s geographical position creates an opportunity. Refined copper produced close to EU manufacturing centres can reduce logistics exposure and support regional cable, transformer, motor and automotive industries. Yet Serbia must capture more than royalties, wages and gross exports. Domestic value depends on processing, procurement, engineering services, taxation and the state’s ownership position.
The new smelter could increase local value added, but only if its economics account for energy, concentrate quality, sulphur management and environmental controls. Smelting is electricity- and fuel-intensive. A large new facility would need reliable grid capacity, potentially dedicated substations and long-term power arrangements. Serbia’s electricity system is already balancing coal dependence, hydrological volatility and growing renewable generation.
The carbon profile will become commercially significant. While the EU’s Carbon Border Adjustment Mechanism does not currently treat every copper product in the same way as steel, cement, aluminium and fertiliser, European buyers are imposing wider supply-chain carbon requirements. Plant-level electricity data, direct-emissions measurement and verified material flows will affect access to premium customers and green-finance structures.
Sulphur dioxide and particulate emissions are more immediate. A modern smelter requires high sulphur capture, acid production, continuous emissions monitoring and transparent reporting. Water management must cover abstraction, process reuse, mine dewatering and protection of surface and groundwater. Tailings storage needs independent design review, geotechnical monitoring and emergency planning over the full operating and closure period.
The spatial plan acknowledges that some areas may require population relocation where technical studies conclude that safe living conditions cannot be maintained. This is the programme’s most sensitive social issue. Resettlement is not simply a transaction involving compensation for houses. It affects agricultural land, community networks, access to services, cultural property and livelihoods.
International financing standards would require a detailed resettlement action plan, census, asset valuation, livelihood restoration and grievance mechanism. Even if Zijin finances the development from its own balance sheet or Chinese banking relationships, weak resettlement practice would create legal, political and operational risks. Mining projects rarely recover smoothly from a loss of local legitimacy.
The long planning period to 2050 makes cumulative impact assessment essential. Individual permits for a mine, smelter, road or power line can understate the combined effect of the entire complex. The environmental assessment must consider the interaction among the Lower Zone, Malka Golaja, existing mines, tailings facilities, smelting capacity and population changes across Bor and Zaječar.
Infrastructure ownership must also be clarified. Roads, rail facilities, substations and water systems may serve both the mining complex and local communities. The financing agreements should specify who constructs, owns, maintains and ultimately rehabilitates each asset. Ambiguity during development often becomes a public cost after operations begin.
For Serbia’s government, the negotiation extends beyond permitting. It must define fiscal stability, royalties, dividend expectations from Serbia Zijin Copper, local-procurement commitments, environmental security and closure funding. Mining revenue can fluctuate with copper grades, recovery, prices and treatment costs. Transparent production and transfer-pricing controls are necessary to ensure that taxable value is recorded appropriately.
Zijin has the technical scale and balance sheet to develop large copper assets. Its global portfolio and access to Chinese finance reduce dependence on conventional Western project financing. That strength does not remove the need for disciplined project governance. The larger and more integrated the eastern Serbian complex becomes, the greater the consequences of design errors, schedule delays or environmental failures.
The proposed 126-square-kilometre planning area represents the transition from individual mine development to a regional mining-industrial system. By 2035, eastern Serbia could have a substantially larger underground mining base, a new metallurgical platform and infrastructure built around decades of production. The value of that transformation will be measured not only in tonnes of copper and gold, but in the quality of the environmental controls, the treatment of affected communities and the share of long-term economic value retained in Serbia.
