Mine strategy, planning & optimisation
Strategic options, trade-offs and optimisation to lift NPV and de-risk the path to production.
Mining engineering consultancy · Perth, WA
Underground mining engineering, from first principles to life‑of‑mine.
HAHO Developments is a specialist hard rock mining consultancy in Perth, Western Australia. We help junior, mid-tier and major miners plan, design and optimise underground operations that stand up technically and commercially.
15+ yrs
Combined experience
AusIMM
Members
JORC
Reporting
Global
Jurisdictions & commodities
Who we are
An independent consultancy run by the engineers doing the work.
Two mining engineers with deep underground experience across multiple commodities and jurisdictions. You work with us directly — no layers, no handovers — and we bring geotechnical, operational and financial thinking together so the plan that leaves the page is the plan that works underground.
Capabilities
Technical depth across the underground mining lifecycle.
From early-stage evaluation through detailed design to operational support — sized to the decision in front of you.
01 Strategy & studies
Scoping, pre-feasibility & feasibility studies
Study management and technical inputs across all stages, structured for clear go/no-go decisions.
Cut-off grade & economic analysis
Cut-off grade optimisation, NPV modelling and trade-off studies that connect the orebody to the bottom line.
Technical due diligence & project evaluation
Independent review of designs, schedules and assumptions to support investment and transaction decisions.
02 Mine design & planning
Underground mine design
Method selection and design across block cave, sub-level cave, sub-level open stoping, room & pillar and longhole stoping.
Life-of-mine planning & scheduling
Detailed and strategic schedules that balance development, production and capital over the life of the asset.
Ventilation design & modelling
Primary and auxiliary ventilation design and network modelling for safe, compliant and cost-effective airflow.
03 Operations & people
Operational support & risk management
Hands-on technical support and practical risk management for operations working under pressure.
Mining software expertise
Deswik, Datamine and Ventsim modelling, automation and workflow setup — built to be handed back and maintained.
Engineering & technical staff development
Mentoring and capability building for graduate engineers and technical services teams.
Why HAHO
Built on operational ground, not just theory.
We've worked the development and production end of underground mines. That shapes how we design, schedule and advise.
01
Operational first
Our designs account for what actually happens at the face — development rates, ground conditions, equipment and the realities of a working roster.
02
Integrated thinking
Geotechnical, operational and financial considerations are weighed together, not bolted on after the design is fixed.
03
Software done right
Advanced skills across leading mining platforms, with models structured so your own team can own and maintain them afterwards.
04
Scalable engagement
From a focused second opinion to full study delivery — sized for juniors through to majors, in Western Australia and internationally.
Selected experience
A track record underground.
01
Life-of-mine planning and optimisation for complex underground deposits.
02
Execution planning for block cave, sub-level cave and longhole stoping operations.
03
Technical and economic trade-off analysis to guide strategic decision-making.
04
Ore reserve development and compliance reporting under the JORC Code.
05
Ventilation and material-handling design for large-scale underground projects.
// Experience spans multiple commodities and jurisdictions, here and overseas.
The team
Two engineers, directly engaged.
HAHO Developments is led by its two founders, who do the work themselves. Between them they bring formal qualifications in mining and geotechnical engineering and first-hand operational experience underground.
Qualifications & memberships
- Master's qualifications in Mining Engineering and Geotechnical Engineering
- Specialist degree in Geothermal Engineering
- JORC Code reporting certification
- Members, Australasian Institute of Mining and Metallurgy (AusIMM)
- First aid and underground safety certifications
Claudia Hangrad
Director & Principal Mining Engineer
Andras Horzsa
Director & Principal Mining Engineer
Contact
Let's talk about your project.
Tell us what you're working on — a study, a design, a schedule or a second opinion — and we'll get back to you promptly.
Email us
info@hahodev.com