Tungsten Mining’s Watershed debt plan: gearing, capex and schedule notes for engineers
Reviewed by Tom Sullivan

First reported on Australian Mining
30 Second Briefing
Tungsten Mining has secured non-binding indicative debt proposals for its Watershed tungsten project in far North Queensland, targeting gearing of up to 70 per cent and potential debt funding of about $200 million against a pre-production capital cost of $274 million. The company is now progressing lender due diligence and credit approvals, with the debt package expected to be complemented by equity and potential offtake-linked funding. For project engineers, the high gearing assumption will drive tight control of pre-strip, plant construction and ramp-up schedules to meet financier covenants.
Technical Brief
- Debt proposals are currently non-binding and indicative, so engineering schedules must accommodate potential term changes.
- Tungsten Mining must now support lender technical due diligence, including mine plan robustness and metallurgical performance evidence.
- Credit approval processes will likely lock in construction milestones and ramp-up curves as covenant benchmarks.
- Financing structure is expected to be complemented by equity, affecting timing of major contract awards and mobilisation.
- Offtake-linked funding options could influence product specification, processing cut-off grades and concentrate logistics design.
- High leverage on a single tungsten asset increases sensitivity to capex overruns and commissioning delays.
Our Take
With potential project gearing at 70% against a A$274 million pre-production capital cost, Watershed sits at the higher end of leverage seen in our tungsten project coverage, which will sharpen lender focus on cost control and ramp-up risk in Far North Queensland.
The earlier mandate to Jefferies Australia to secure strategic equity for Watershed, alongside Cutfield Freeman & Co’s debt role, suggests Tungsten Mining is deliberately sequencing a classic project-finance structure: debt anchored first, then equity priced off the de-risked funding stack.
Taken with Tungsten Mining’s parallel work at Mt Mulgine in Western Australia, our database indicates the company is positioning as a multi-asset tungsten producer in Australia, which could be attractive to offtakers seeking diversified, non-Chinese supply options.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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