A project can report lower emissions, better local content, safer labor conditions, improved waste recovery, or verified responsible sourcing. The harder question is simple: who checked the claim, and could someone else reproduce it from the evidence?

Local-content percentages can show where money was spent and who participated, but they do not necessarily prove lasting economic value. This article explores how major projects can move beyond procurement statistics to build stronger suppliers, transferable workforce skills, technical capability, resilient supply chains, and a meaningful economic legacy.

Project success should not end at handover. This article examines how long-term sustainability performance can be tested through community outcomes, workforce and supplier capability, environmental restoration, biodiversity, asset efficiency, and residual liabilities years after the project team has left.