Advisory, Engineering, Feasibility Studies & EPC Contract Delivery
Engineering Projects Delivered Across Australia and Sub-Saharan AfricA
A portfolio of complex mining infrastructure from feasibility through construction. Critical Minerals and non-process-infrastructure.
Get In TouchWhat sets Harrington O'Sullivan apart:
Principal-Led Delivery
Your project led by the company principal.
Proven in Hard Environments
Five countries. Twenty years. Real outcomes.
Senior Representation
Ministerial access backed by engineering credibility.
What sets Harrington O'Sullivan apart:
Featured Projects
Our Projects
Principal-led engineering, delivery, and advisory services built for complex mining and infrastructure environments.
Ewoyaa Lithium Ghana
The Company's flagship project, the Ewoyaa Lithium Project, set to be Ghana's first lithium-producing mine
PERMADAN UREA/GAS
Large-scale project delivery for one of WA's most significant industrial developments.
ROCKTIVITY / NEPEAN NICKEL MINE
WA Senior Advisory for growth stage critical mineral company's in early re-start cycle.
Choose Us
Why Harrington O'Sullivan
Principal-Led Delivery
Every project gets principal level direct involvement, thus reducing overhead slippage with focused deliverable outcomes.
Proven in Hard Environments
From the Pilbara to the DRC, we've delivered in environments where failure carries real consequences. Twenty years, five countries, no excuses.
Senior Representation
We don't just deliver projects. We sit at the table with regional stakeholders when projects need support to progress.
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FAQ
Frequently Asked Questions
Common questions about our engineering projects and how we deliver them.
What type of projects do we have experience in?
Our mining portfolio spans feasibility studies, infrastructure builds, engineering design, and senior advisory across lithium, nickel, copper, and large-scale industrial projects in Australia and Sub-Saharan Africa.
Does George work on every project personally?
Yes. Every project in this portfolio was delivered with George Harrington’s direct involvement. That is the model. No junior staff, no handoffs.
Do you take on international engineering projects?
Yes. We have delivered projects across five countries, including remote and challenging environments in West Africa and Central Africa. We operate where on-the-ground experience and senior representation matter most.
What stage of project do you typically get involved in?
We work across the full project lifecycle, from pre-feasibility and bankable feasibility studies through to detailed engineering, procurement, construction management, and commissioning. A bankable study sets the target. Delivery decides whether you hit it. We stay involved through the build, not just the study.
Can you provide references from past projects?
Yes. George can provide direct references from project owners and boards he has worked with. Contact us and we will arrange introductions relevant to your project scope.
How do you manage cost and schedule risk during construction?
Our Digital Project Delivery capability connects cost, programme, documents, and compliance into one system. Overruns and slippage are flagged before they land, not in the post-mortem. This is industry-proven delivery technology applied to the realities of remote mining construction and delivered alongside specialist digital partners.
How do you handle document control on remote sites?
Every external communication references verified information. Nothing unregistered leaves the project. Documents, transmittals, permits, inspections, and site records are captured as audit-ready evidence. One connected system, not scattered across spreadsheets and inboxes.
Discuss Your Next Project With us
Every engagement starts with a direct conversation with the principal. No layers, no sales team.