Europe’s strategy for securing critical raw materials is increasingly expanding beyond new mining projects to include the recovery of metals from legacy waste, industrial residues and secondary resources. As demand accelerates for materials used in batteries, electric vehicles, power networks, defence technologies, low-carbon steelmaking and advanced manufacturing, the reprocessing of mining and industrial waste is becoming an increasingly important part of the continent’s raw materials supply chain.
The Western Balkans possess a combination of historical mining districts, active base-metal operations, copper and lead-zinc camps, chromium and bauxite resources, metallurgical infrastructure and legacy industrial sites that could support this transition. Regional assessments have identified more than 344 million tonnes of legacy mining and industrial waste distributed across more than 1,650 sites, creating a substantial inventory of material that could be evaluated for the recovery of valuable metals. These waste streams include tailings, slag, waste rock, flotation residues, low-grade stockpiles, metallurgical by-products, red mud, industrial scrap, spent batteries, pyrite-rich materials and complex concentrates that may serve as secondary feedstock for Europe’s growing critical minerals processing sector.
Bor mining district offers large-scale processing research opportunities
Serbia’s Bor mining and smelting district represents one of the region’s most significant industrial mineral systems. Operated by Zijin Mining through Serbia Zijin Copper, and linked to the Čukaru Peki copper-gold mine operated by Serbia Zijin Mining, Bor combines active copper and gold production with more than a century of mining and metallurgical history. Alongside modern operations, the district contains extensive historical tailings, slag deposits, waste rock, low-grade stockpiles and environmental management challenges associated with long-term mining activity.
These characteristics make Bor suitable for evaluating technologies related to tailings reprocessing, copper recovery, bioleaching, acid mine drainage treatment, arsenic management, impurity removal, sensor-based ore sorting, smelter slag recovery, digital ore passports and closed-loop water management. Rather than treating historical mining waste solely as an environmental liability, such projects could examine its potential as a controlled secondary resource for industrial processing.
European research programmes focus on secondary raw materials
Several European research initiatives already address technologies relevant to mining waste and secondary resource recovery. DYNOSORT is developing sensor-based sorting systems for recovering critical raw materials from mining waste, while CHROMIC has demonstrated processing routes capable of recovering chromium, niobium, molybdenum and vanadium from secondary resources. The Western Balkans provide an opportunity to supply representative feedstocks for these technologies under real industrial conditions rather than laboratory environments, supporting the validation of processing methods across complex mineral systems.
Vareš combines polymetallic production with modern processing
In Bosnia and Herzegovina, the Vareš mining operation has become one of the region’s most significant polymetallic developments following Dundee Precious Metals’ acquisition of Adriatic Metals. The underground mine and processing plant produce saleable silver-lead-gold and silver-zinc concentrates, returning Bosnia and Herzegovina to European polymetallic supply chains. The operation also provides an industrial setting where flotation technology, concentrate quality, water management, tailings engineering, environmental monitoring, community engagement and downstream product qualification can be evaluated together.
Lead-zinc-silver deposits commonly contain associated elements including cadmium, arsenic, mercury and barite, requiring detailed sampling, metallurgical control and environmental management throughout the production process. Projects such as Vareš therefore offer practical examples of how concentrate production and waste management can be integrated under modern European operating standards.
North Macedonia provides operational lead-zinc platform
Central Asia Metals’ Sasa mine in North Macedonia represents another established processing platform within the region. The underground operation produces zinc and lead concentrates and has issued 2026 production guidance of approximately 18,000–20,000 tonnes of zinc-in-concentrate and 26,000–28,000 tonnes of lead-in-concentrate. Sasa combines underground mining, flotation processing, concentrate transport, paste backfill systems, tailings management and long-term rehabilitation planning within an active commercial operation.
Because the mine generates consistent production data and regular concentrate streams, it offers opportunities for research into zinc and lead recovery, silver by-products, reagent optimisation, tailings stability, paste backfill performance and additional by-product recovery technologies.
Trepča highlights governance requirements for circular materials
Kosovo’s Trepča mining complex remains one of the Western Balkans’ best-known historical lead-zinc-silver districts. Alongside its mineral potential, the complex also contains extensive historical mining infrastructure and legacy waste that could contribute to future circular raw materials initiatives.
Any future integration into European supply chains would require independent resource verification, environmental remediation, detailed tailings assessment, water-quality monitoring, transparent ownership structures and compliance with downstream qualification standards. The Trepča example illustrates that recovering metals from historical mining areas requires rigorous governance alongside technical processing capability.
Albania’s chromium sector expands regional processing opportunities
Albania’s Bulqizë chrome district and producers including AlbChrome provide another important component of the regional processing landscape. The district has long supplied chromium to ferrochrome and stainless-steel industries.
Future development opportunities extend beyond ore extraction and include beneficiation, concentrate quality improvement, ferrochrome production efficiency, slag recovery, tailings management and lower-carbon metallurgical technologies. As chromium remains essential for stainless steel, speciality alloys and defence-related manufacturing, processing improvements within Albania’s chromium sector could strengthen regional industrial supply chains.
Bauxite residues broaden critical minerals recovery potential
Industrial residues associated with bauxite mining and aluminium production also contribute to the Western Balkans’ secondary resource base. In Montenegro, historical bauxite mining and aluminium production centred around Nikšić have created legacy deposits of red mud and other processing residues.
Depending on their origin and processing history, bauxite residues may contain recoverable iron, titanium, scandium, rare earth elements and other valuable materials. Although chemically complex and environmentally sensitive, these materials provide suitable feedstock for research into residue treatment, environmental remediation and critical minerals recovery technologies.
Serbia strengthens secondary materials processing
Serbia also possesses a growing inventory of secondary industrial materials outside conventional mining. The country’s steel industry, copper smelting operations, automotive manufacturing, industrial production and expanding renewable energy sector are expected to generate increasing quantities of electric arc furnace dust, copper slag, spent catalysts, industrial scrap, battery black mass, solar panel waste, electronic waste and power-grid equipment residues. Developing mapping programmes, collection systems, pre-treatment facilities, technical standards and pilot refining operations would establish the foundation for future recovery of these materials.
Battery recycling infrastructure gains strategic importance
Battery recycling has become another priority for Europe’s critical minerals strategy. Research programmes including RESPECT and REVITALISE are developing technologies capable of recovering lithium, nickel, cobalt, manganese, graphite, aluminium, copper, fluorides and phosphates from multiple battery chemistries.
Although the Western Balkans are unlikely to match battery recycling volumes seen in Germany, France or Poland in the near term, the region could support pre-treatment operations and battery black mass logistics. Serbia’s automotive manufacturing base and broader industrial sector position the country as a potential regional hub for battery collection, transport, safety management, customs procedures and partnerships with refining facilities.
Environmental governance underpins circular raw materials
The expansion of secondary raw materials depends on robust governance alongside processing technology. Waste-derived feedstocks entering European industrial supply chains require audited sampling procedures, independent laboratory verification, digital traceability systems, environmental baseline studies, waste classification, social monitoring and clearly defined ownership responsibilities.
Meeting these requirements is essential for acceptance by industrial buyers, financial institutions, insurers and European regulatory authorities.
Pilot investments support future processing capacity
The growth of circular raw materials creates opportunities for investment beyond conventional mining developments. Financing could support waste characterisation programmes, pilot sorting plants, tailings reprocessing studies, hydrometallurgical testing, mobile analytical laboratories, water treatment facilities, battery black mass pre-treatment centres and digital traceability platforms.
Projects valued between €5 million and €20 million could establish the technical data required to support larger processing developments valued between €100 million and €300 million.
Different countries within the region offer distinct processing opportunities. Serbia combines Bor tailings and slag, Čukaru Peki process optimisation, lead-zinc-silver concentrate assessment, graphite testing, antimony exploration samples, battery black mass logistics and industrial waste mapping. Bosnia and Herzegovina provides Vareš, legacy lead-zinc districts, bauxite residues and coal-related industrial waste. North Macedonia contributes the operating Sasa mine, while Albania offers chromium and ferrochrome residues. Montenegro adds bauxite residue, aluminium-sector legacy waste and port infrastructure, while Kosovo’s Trepča complex remains dependent on improvements in governance and environmental management before wider integration into European supply chains.
The expansion of these activities could support a broader regional ecosystem including laboratories, sampling specialists, environmental monitoring firms, pilot processing plants, engineering companies, universities, equipment suppliers, digital data platforms, ESG auditors and offtake coordinators, strengthening the Western Balkans’ role in Europe’s evolving circular raw materials industry.
