About Sandhurst
Sandhurst was founded in 2025 by Sean Winterburn, following three decades working at the sharp end of complex, high-risk critical minerals and mining projects and operations across global jurisdictions.
Sean’s experience spans major global resource developments, politically sensitive environments, and situations where trust has needed to be rebuilt under scrutiny. He has worked where projects were technically sound but exposed - to regulatory challenge, community opposition, or loss of investor confidence.
The focus of Sandhurst is pragmatic and outcome-driven:
Stabilise risk. Enable progress. Leave organisations stronger than they were found.
Sean is typically brought into projects or operations that are formally compliant but functionally fragile, where social, environmental, or regulatory risk threatens momentum and leadership needs clarity before confidence erodes.
How we work
Sandhurst Sustainability operates as a senior, independent intervention - not a volume consultancy.
Our work is:
- Independent and conflict-aware
- Senior-led, not delegated
- Grounded in operational reality
- Focused on minimum viable action, not maximal theory
We work quietly, rigorously, and with a clear bias toward decisions that hold under pressure.
Founder profile
Sean brings deep experience leading environmental and HSSE transformations, redesigning risk and assurance systems, and supporting major projects through complex permitting and approvals landscapes.
He has worked extensively in environments where expectations are high, tolerance for error is low, and stakeholder trust cannot be assumed. His strength lies in identifying where confidence is fragile, and what must change, practically and immediately, to stabilise it.
Across jurisdictions and project phases, one lesson has proven consistent:
'Projects progress when commitments are defensible, data is credible, and organisations can reliably do what they say they will do'.
Sustainability, in this context, is not a statement of intent.
It is the discipline that allows decisions to withstand scrutiny and momentum to be maintained.