Zijin Mining is planning to raise annual ore extraction at its Jama Bor mine in eastern Serbia to 18 million tonnes, through a major expansion of its underground copper mining operations. The proposal could strengthen Serbia’s role in Europe’s copper supply chain, while requiring extensive investment in mining and processing infrastructure and the relocation of residential areas.
New spatial-planning documentation sets out a 41-year mining programme covering approximately 571.5 million tonnes of ore. It envisages deeper underground workings, a new flotation plant and additional infrastructure across approximately 1,703 hectares around Bor.
The development would require the relocation of the Brezonik settlement and sections of the Bor–Mala Krsna railway. Further geological studies are needed to establish whether other residential areas and infrastructure could also be affected by ground subsidence.
The proposal would rank among Serbia’s largest potential copper-industry expansions, but its total capital expenditure, financing structure and implementation timetable have not been disclosed. European copper demand is being supported by investment in electricity networks, renewable generation, transport electrification and industrial infrastructure. Serbia’s mineral production could gain strategic importance, although the scale of the project also raises questions about the cost of extracting deeper deposits and meeting environmental and social obligations.
Mining schedule and underground development
Serbia Zijin Copper, operator of the Bor mining and metallurgical complex, is funding preparation of the spatial-planning documentation. The proposal extends the mine’s operating horizon beyond the current planning period, with an initial implementation stage running to 2035 and a spatial development framework extending to 2045.
Under the preliminary production schedule, extraction of ore from the expansion would start in its sixth year. Annual output would reach 18 million tonnes during the main production period, from years 11 to 32.
The cumulative production estimate covers extracted ore, not contained copper or refined metal. The project’s value would depend on copper grades, metallurgical recovery, processing efficiency, and production of associated gold and silver. Earlier geological disclosures identified substantial copper resources in the wider Borska Reka deposit, but the latest planning proposal does not provide a complete, publicly verified production and financial model for the new development phase.
The expansion would use deeper underground mining, with a method designed to allow controlled collapse of the rock mass above mined areas. Such methods can support large-scale extraction from relatively low-grade copper deposits, but pose significant geotechnical challenges when workings extend beneath settlements and industrial infrastructure.
Ground movement can gradually affect buildings, roads, railways and utility networks, making advance geotechnical modelling and surface monitoring essential. The preliminary planning documents identify a potential surface-impact zone based on estimated rock-movement characteristics, but further investigation will be needed to determine the final extent of subsidence.
Resettlement and railway changes
The potential effects on Brezonik are significant because the proposed mining development is expected to require the settlement’s relocation. Resettlement costs could form a substantial part of the investment programme. Payments for houses and land would cover only some of the possible expenditure.
Relocation may also require new residential infrastructure, utility connections, roads and public facilities, as well as measures to restore livelihoods and commercial activity. The timing of this spending matters because communities and affected infrastructure may have to move before underground mining advances into the relevant extraction areas.
Delays in land acquisition, resettlement agreements or regulatory approvals could affect the production schedule and financing requirements. The planned relocation of part of the Bor–Mala Krsna railway adds another significant engineering obligation.
Railway diversion may involve new earthworks, bridges, drainage, signalling, telecommunications and safety systems, as well as coordination to maintain industrial transport during construction. The project’s contractual framework will need to address who pays for the infrastructure, how construction is sequenced and who will own the relocated assets.
Processing capacity, utilities and waste
The expansion also includes new mineral-processing capacity, with a flotation facility intended to handle the higher underground ore output. Flotation plants require substantial energy and maintenance, particularly when they need extensive grinding and material-handling capacity. At the proposed extraction rate, electricity consumption, equipment availability, water supply and metallurgical recovery would be key factors in operating profitability.
Even relatively small changes in energy use per tonne or copper recovery can materially affect the economics of a mine processing millions of tonnes annually. The project could increase demand in eastern Serbia for electricity, industrial water infrastructure, mechanical equipment, electrical systems and specialist engineering services.
Domestic contractors could have opportunities in underground construction, engineering supervision, industrial maintenance, environmental monitoring and equipment installation. The share of investment secured by Serbian companies will depend on procurement arrangements and whether local suppliers can meet the technical requirements of a large underground mining development.
Mine-waste management is another major financial and environmental issue. The planning documents identify the Veliki Krivelj tailings facility as the proposed destination for flotation waste from the expanded operations. Processing hundreds of millions of tonnes of ore would require substantial waste-handling capacity, long-term water management and reliable monitoring of tailings infrastructure.
The project will need to demonstrate that disposal capacity, structural stability and environmental controls can accommodate the additional mining activity. Cumulative environmental impacts are particularly relevant in Bor, where decades of mining and metallurgical operations have already put pressure on local air, water and land quality.
Environmental and investment requirements
A comprehensive environmental assessment would need to examine groundwater impacts, surface-water protection, dust emissions, noise, tailings management and the combined effects of existing and planned mining. Long-term financial obligations for mine closure, land rehabilitation and environmental monitoring should also be included in the investment assessment.
No capital expenditure estimate has been publicly disclosed, leaving a major gap in assessing the expansion’s commercial significance. Underground development, mineral processing, energy infrastructure, railway relocation, settlement resettlement and environmental systems could together require substantial investment. However, the spatial-planning parameters alone do not support an independently verifiable total.
A credible economic assessment would require detailed estimates of recoverable copper and precious metals, operating costs, development expenditure, sustaining capital, commodity-price assumptions and production sequencing. The project would also need to show that it can finance infrastructure and environmental obligations that may arise years before the related ore production generates revenue.
These factors matter for evaluating bankability, investment returns and the allocation of risk among the mining operator, public authorities and infrastructure owners. Serbia could use the expansion to increase copper exports, attract engineering investment and deepen industrial activity around one of its most important mining districts.
The wider economic contribution could extend beyond ore extraction if domestic manufacturers and service companies win a larger role in equipment supply, construction, maintenance and mineral processing. Higher production volumes would not automatically produce proportionately higher economic benefits. Long-term value would depend on domestic procurement, production efficiency, environmental performance, employment and fiscal returns from the expanded operations.
Consultation and further approvals
The proposal is entering an early public consultation period from October 26 to November 9, 2026. More detailed technical studies, environmental assessments and regulatory decisions will be required before the development can be considered an approved investment programme.
The expansion could reinforce Serbia’s position in Europe’s copper supply chain for decades, but Zijin must show that the value of deeper copper resources can cover extraction and processing costs alongside extensive infrastructure, relocation and environmental commitments. Those obligations are central to making an operation of this scale commercially and socially sustainable.
