Gold Tailings Retreatment Growth Hinges on Tailings Dam Permits
Summary
DRDGOLD holds a 1.2 Mt/month plant at 500,000 t until its new tailings dam is ready, and Pan African ties its Soweto decision to deposition and permits.
Gold tailings retreatment growth in South Africa now depends on tailings dam permits. On their fiscal 2026 annual results calls in August and September 2026, DRDGOLD Limited (DRD) and Pan African Resources PLC (PAFRY) both said that the timing of their tailings expansions hinges on when new tailings storage facilities receive their licences and are built.
Why retreated gold tailings need new licensed dams
Higher gold prices and stricter rehabilitation standards have made old tailings on South Africa's Witwatersrand gold belt worth processing again. Tailings are the fine, sand-like waste left after ore is processed, and they still contain small amounts of gold. DRDGOLD's business is to wash historical tailings dumps into slurry and recover that gold. Its CEO explained that tougher environmental closure standards now require mine owners to spend money that was never in their original plans to clean up old footprints, and tailings treatment meets that need [1]. Pan African said it expects roughly 60% of its production to come from this kind of surface remining going forward [2].
Every tonne that is re-treated has to be deposited again on a lined tailings dam that meets dam-safety requirements. DRDGOLD said it is moving off its existing Brakpan tailings dam and is managing deposition volumes to stay within safety factors [1]. A new facility needs environmental, waste-management and water-use licences, and the pipelines that carry the slurry need servitudes, or rights of way, across the land they cross [1][2]. A processing plant can therefore be finished first, while the tonnes it can actually treat depend on when a new dam can accept material.
Both companies tie expansion schedules to tailings dams and approvals
At DRDGOLD, plant capacity is no longer the limit; the new tailings dam is. Plant capacity at its Far West operation has been expanded to 1.2 million tonnes per month, but management said throughput will stay at 500,000 tonnes per month until the Regional Tailings Storage Facility (RTSF) can take material [1]. At its Ergo operation, the planned Withok tailings dam will miss the original 2028 target, leaving a throughput gap of 150,000 tonnes per month until it comes online in 2029 [1]. In this expansion round, tailings-dam and pipeline items total about ZAR 8.1 billion, against about ZAR 1.9 billion for the plant expansion [1].
Pan African has placed its next investment decision behind deposition and approvals. In September 2026 the company completed the feasibility study for its Soweto Cluster tailings project: about 560,000 ounces over 15 years at a gold price of $3,550 per ounce, an internal rate of return of about 30% and upfront capital of $216 million [2]. The CEO said a final investment decision can follow only once environmental and water-use approvals, deposition and pipeline servitudes are resolved, and that fiscal 2028 will most probably be the first year of meaningful spending [2]. On its interim results call in February 2026, the company said only that the board would assess the way forward after the study, without naming these conditions [3]. The two companies have no ownership link, yet they set out the same precondition, which makes tailings dam licensing look like a constraint shared across the industry.
Operators with licensed deposition space are likelier to add ounces first
New capital for tailings retreatment is going increasingly into dams and pipelines. BusinessDay reported that Soweto's capital cost rose by ZAR 880 million from the November 2025 study to ZAR 3.68 billion, including a new tailings storage facility [4]. In that setting, operators that already hold approved deposition capacity, or can free some up, are more likely to grow output first. Pan African said that using BTRP tailings as underground backfill could reduce surface deposition requirements and potentially allow it to retreat the Sheba Dormant and Camelot tailings facilities [2].
This view has clear limits for now. Only two companies have directly disclosed the constraint, and DRDGOLD describes the Withok gap as relatively modest, with its Daggafontein tailings dam as a buffer [1]. Timing is also reported two ways: BusinessDay said the Soweto final investment decision was expected in December [4], while the CEO said on the September 16 results call that it would come around early to mid 2027 [2]. Items to watch are when Withok's licences are granted, when DRDGOLD lifts throughput to 1.2 million tonnes per month, and the timing of Soweto's approvals and investment decision.
Which companies this change could affect
- Harmony Gold (HMY): The South African gold miner cited about 100,000 ounces of conceptual-stage tailings reclamation extensions on its results call [5]. Those ounces would also need new deposition space. Its Savuka tailings dams are approaching their final approved height, and it has applied for environmental and water-use authorisation for a new Mponeng tailings facility [6], so it may face the same licensing pace.
- Sibanye-Stillwater (SBSW): The company owns 50.1% of DRDGOLD, has received ZAR 955 million in dividends from it over two years and supplies it with legacy tailings dumps [1]. When DRDGOLD's new dams come into use could affect when that dividend stream and tailings asset value are realised.
Sources
[1] Drillr · DRDGOLD (DRD) · 2026-08-19 · Annual results call
So we will maintain that 500,000 tonnes per month throughput capacity until we're ready with RTSF to deposit on to that one.
[2] Drillr · Pan African Resources (PAFRY) · 2026-09-16 · Annual results call
[3] Drillr · Pan African Resources (PAFRY) · 2026-02-18 · Interim results call
[4] BusinessDay · Pan African completes feasibility study for Soweto gold project · 2026-09-11 · News report · https://www.businessday.co.za/companies/2026-09-11-pan-african-completes-feasibility-study-for-soweto-gold-project/
[5] Drillr · Harmony Gold (HMY) · 2026-08-27 · Annual results call
[6] EIMS · Harmony Mponeng Lower Compartment TSF project notice · 2026-02-24 · Environmental assessment notice · https://www.eims.co.za/2026/02/24/1658-harmony-mponeng/
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