Serbia’s Mining Pipeline Broadens as Foreign Explorers Advance Gold and Copper Projects

Foreign mining companies are expanding exploration and development activity across Serbia, with Australian-listed explorers advancing gold and polymetallic projects while China’s Zijin Mining prepares further investment in the country’s established copper operations.

Recent drilling at Rogozna, Bobija, Tlamino and Ravni has added projects to Serbia’s pipeline for international exploration capital. The portfolio ranges from early-stage high-grade discoveries to Rogozna, which has an inferred 9.25 million ounces of gold equivalent resource progressing towards development studies. At the same time, Zijin is preparing major underground developments at Čukaru Peki and Bor, potentially increasing Serbia’s copper production over the longer term.

The expansion is increasing the role of Serbia in Europe’s raw-materials supply chain while highlighting constraints facing the sector, including permitting delays, limited funding for junior companies, complex processing requirements and increasing scrutiny of labour and environmental practices.

Rogozna Advances as a Major Gold Development

The most advanced of the emerging gold projects is Strickland Metals’ Rogozna property near Novi Pazar. Strickland reports an inferred resource of 217 million tonnes grading 1.33 grams of gold equivalent per tonne, containing 9.25 million ounces of gold equivalent across the Shanac, Gradina, Medenovac and Copper Canyon deposits. The resource comprises 6.07 million ounces of gold, 311,000 tonnes of copper, 36.7 million ounces of silver, 383,000 tonnes of lead and 870,000 tonnes of zinc.

A revised estimate for Copper Canyon contains 650,000 ounces of gold and 72,000 tonnes of copper within 16 million tonnes grading 1.3g/t gold and 0.45% copper. Strickland is assessing Copper Canyon as a potential underground development. Mineralisation starts near surface and continues into deeper, gold-rich zones that could favour selective underground mining rather than a large open-pit operation.

The overall scale of Rogozna also creates the possibility of a shared processing facility serving multiple deposits. The deposits have differing mineralogical characteristics. Gradina is mainly a higher-grade gold deposit, while Shanac and Medenovac contain combinations of gold, copper, silver, lead and zinc. Copper Canyon contains both copper-gold and gold-dominant mineralisation. A central processing facility could limit duplicated infrastructure, but treating different ore types could require separate processing circuits and concentrate streams. Metallurgy and mine sequencing will therefore form important components of the project’s economic evaluation.

The 9.25 million-ounce gold-equivalent figure combines deposits assessed using different commodity-price and recovery assumptions and does not represent 9.25 million ounces of recoverable gold. Strickland plans 50,000 metres of resource drilling and 20,000 metres of exploration drilling in 2026, followed by a pre-feasibility study targeted for 2027. Resource drilling will need to convert a substantial portion of the inferred material into the indicated category before detailed mine planning and reserve estimation can progress.

Zijin Takes a Stake in Strickland

Chinese mining group Zijin increased its holding in Strickland to 7.44% in June, making it Strickland’s second-largest shareholder. The investment does not provide Zijin with an operating role or ownership of Rogozna. It nevertheless gives the established Serbian copper producer a position in a project that could later require a development partner, buyer or processing expertise. The investment comes as Serbia’s mining sector increasingly combines smaller exploration companies with larger strategic operators capable of providing the capital and technical capacity required for mine development.

Bobija Expands Its Near-Surface Polymetallic System

Around 200 kilometres north-west of Rogozna, Middle Island Resources has connected three mineralised zones at Bobija into a shallow system covering approximately 80,000 square metres. The company’s second drilling phase comprised 17 reverse-circulation holes totalling 1,363 metres. One hole returned 41 metres at 1.03g/t gold and 52.9g/t silver from one metre, along with copper, lead and zinc.

Another hole intersected 40 metres at 1.23g/t gold and 64g/t silver from one metre, while a further hole returned 28 metres at 1.18g/t gold and 66.6g/t silver from 20 metres. Step-out drilling to the north of the historic mining area produced 13 metres at 1.87g/t gold and 93.2g/t silver from three metres. The broad, shallow intersections differ from narrow-vein exploration targets and, if continuity is established, could provide a basis for relatively low-cost open-pit mining. Bobija does not yet have a mineral-resource estimate, however.

Historic exploration concentrated on lead, zinc and barite. Middle Island believes earlier work underestimated the importance of gold and silver, potentially positioning the precious metals as primary sources of revenue rather than secondary products. That interpretation could also create additional processing requirements. Polymetallic ore needs to be separated into products acceptable to smelters, while higher recovery of one metal can affect another and unwanted elements can result in treatment penalties.

Middle Island plans further drilling to the north, south, east and west to determine whether the Central, West and North zones represent one continuous mineralised body. The company has a 10-year option to acquire two mining licences from Serbian company Bobija doo Ljubovija. The vendor would retain a 0.5% net-smelter-return royalty capped at €500,000. Middle Island reported approximately A$3.15 million in cash at the end of June. That provides funding for further exploration but would not finance mine development, meaning a sufficiently large resource would require additional equity or a larger project partner.

Tlamino Returns to Drilling and Development Studies

MinRex Resources is advancing the Tlamino gold project near Serbia’s border with North Macedonia through a new drilling and technical programme. The Barje deposit already has a Canadian-standard inferred resource of 7.1 million tonnes grading 2.5g/t gold and 38g/t silver. The estimate represents 570,000 ounces of gold and 8.8 million ounces of silver, equivalent to approximately 670,000 ounces of gold equivalent. The estimate was prepared under the NI 43-101 standard and has not yet been verified as a JORC-compliant resource for the Australian market.

MinRex acquired Tlamino through its merger with Electrum Discovery in April and has started a fully funded 7,000-metre drilling programme, the first drilling campaign at Barje in about seven years. The programme includes approximately 3,200 metres of infill drilling aimed at increasing resource confidence. A further 1,000 metres will target extensions around Barje, while 3,000 metres is planned along the corridor towards the Liska lead-zinc occurrence. By the end of June, MinRex had completed 12 holes totalling 1,224.5 metres. Initial assays were expected during the September quarter.

The company intends to use the drilling results to prepare an updated resource and scoping study by the end of 2026, while metallurgical, geotechnical, environmental and permitting work is being conducted alongside exploration. A preliminary economic assessment completed by the previous owner in 2021 assigned Tlamino a post-tax net present value of approximately $101 million. That assessment is no longer considered a reliable measure of current value. Since then, gold and silver prices have risen, while construction, labour and equipment costs have also increased. The new study will need to incorporate the revised resource, Serbia’s fiscal terms and updated processing assumptions.

MinRex is evaluating flotation as a route to producing a gold- and silver-bearing concentrate. The technical assessment will need to establish whether recoveries are sufficient and whether the resulting concentrate meets smelter requirements at competitive treatment charges. MinRex held A$6.04 million in cash at the end of June, providing a stronger near-term funding position than several smaller exploration companies. [[EXTLINK_2]] That cash position is expected to fund the 2026 programme but not mine construction. A positive scoping study would therefore lead into another stage of project financing.

Ravni Represents Earlier-Stage Exploration

Bindi Metals’ Ravni project in Serbia’s Ibar Valley represents an earlier stage of exploration activity. Its maiden drilling programme returned 2 metres grading 21.6g/t gold from 47 metres at Drenjak, including 1 metre at 37.8g/t gold. At Rudnjak North, drilling returned 5 metres at 71.1g/t silver, including 1 metre at 341g/t silver.

The 14-hole campaign identified high-grade mineralisation and a potentially extensive hydrothermal system, but did not establish a mineral deposit. Bindi has yet to publish a mineral-resource estimate, true-width measurements, metallurgical results or a development concept. Most assays from the programme were still outstanding when the initial results were released. The company can earn up to 80% of Ravni under an agreement with Serbian exploration-licence holder Red Creek. Given Bindi’s limited balance sheet, continued exploration success would require additional equity financing.

Ravni demonstrates the willingness of smaller overseas explorers to fund early-stage drilling in Serbia, where the western Tethyan geology provides exposure to gold, copper, silver, lead and zinc. The commercial pathway for these companies depends on establishing discoveries with sufficient scale to attract larger mining companies already operating in the region.

Zijin Expands Serbia’s Copper Operations

The Australian exploration companies remain small compared with Zijin’s Serbian operations, which are entering another phase of development. Zijin has completed a concentrator expansion for the Upper Zone at Čukaru Peki and is accelerating preparations for block-cave mining at the deeper Lower Zone and the Jama mine within the Bor complex. The company has also reported more than 5 million tonnes of copper-equivalent resources at Malka Golaja, which it lists among its priority development projects.

The Bor and Čukaru Peki operations produced a combined 296,000 tonnes of copper and 9.1 tonnes of gold in 2025. For 2026, Zijin has guided to 296,000 tonnes of copper and 8.1 tonnes of gold. Longer-term development could lift combined copper capacity towards 450,000 tonnes per year, although Zijin has not disclosed a complete timetable or consolidated capital budget. Block-cave mining could enable extraction from large underground orebodies, but the method requires substantial upfront development and carries significant geotechnical risks.

Production depends on the orebody fracturing and flowing as expected. Delays in underground access, unexpected water or rock conditions and slower production ramp-up can affect project returns. Surface subsidence also needs to be addressed through land and environmental planning. At Serbia Zijin Copper, Zijin owns 63% and the Serbian state holds 37%. The company separately exercises full control over the entity operating Čukaru Peki.

The ownership structure gives Serbia exposure to dividends and employment as copper production expands, while also leaving the government directly involved in environmental and labour issues associated with the older Bor operations.

US Customs Action Adds Supply-Chain Pressure

The expansion of Serbia’s mining sector is taking place alongside greater scrutiny of labour practices and supply-chain standards. In June, the US Customs and Border Protection ordered the detention of copper and copper products manufactured by Serbia Zijin Copper. The agency cited reasonable indications of six forced-labour indicators: abuse of vulnerability, withholding of wages, intimidation, restricted movement, retention of identity documents and excessive overtime.

Serbia Zijin Copper said it opposed forced labour, took the allegations seriously and was reviewing the findings. The immediate financial impact depends on the amount of Serbian copper supplied to US customers. The broader issue concerns whether European banks, manufacturers and commodity traders introduce comparable supply-chain controls. US importers seeking release of detained shipments must demonstrate that the products were not manufactured using forced labour. This requires traceability across mines, smelters, traders and intermediate manufacturers. European buyers can impose comparable requirements without a formal prohibition, with human-rights provisions increasingly incorporated into lending, procurement and long-term offtake arrangements. For Serbian mining companies, labour, environmental and governance standards are consequently becoming part of the commercial requirements attached to market access.

Foreign Capital Targets Serbia’s Gold and Copper Resources

The recent project activity reflects several developments in international mining investment. Higher gold prices have encouraged reassessment of historic prospects, including areas previously explored primarily for lead and zinc. Strategic demand for copper has supported investment in both new exploration and technically demanding underground deposits. Serbia offers established mining skills, relatively low corporate taxes and access to European customers. Its geology provides exposure to several commodities within a relatively concentrated geographic area.

The projects nevertheless face different development requirements. Rogozna needs resource conversion and a processing strategy; Bobija requires a maiden resource and metallurgical work; Tlamino needs an updated economic assessment; and Ravni must demonstrate continuity and mineable widths.

Zijin, meanwhile, faces the execution of large block-cave developments alongside continuing labour and environmental scrutiny.

The Jadar lithium project operated by Rio Tinto provides an example of the challenges facing strategically important mining developments. The project remains under care and maintenance despite its potential role in Europe’s battery supply chain, following opposition, permitting uncertainty and concerns over public trust. Serbia’s expanding mining pipeline therefore encompasses projects at widely different stages, from initial drilling at Ravni to established resources at Rogozna and Tlamino and large-scale copper production and underground expansion under Zijin.