Environment

We’re committed to minimising our environmental footprint and aspire to be industry leaders in environmental management.

#Our commitment

We'll deliver on our environmental commitment through these actions

Act on climate change through decarbonising our business

Reduce our reliance and impact on water resources

Manage land responsibly and protect biodiversity

Find innovative ways to reduce and reuse waste

#We rehabilitated 421 hectares in 2025 across Thiess, Thiess Rehabilitation, MACA and RTL

#Our approach to responsible environment management

We integrate environmental considerations into all business decisions and set ambitious goals to drive continual improvement.

We empower our people to innovate, collaborate and develop creative solutions to achieve leading environmental outcomes.

In 2025, we introduced four global training modules focused on climate change, materiality, waste management and carbon emissions management, translated into all the primary languages of our operating regions.

We use technology-based solutions to address environmental challenges and enhance our environmental performance.

Our ISO14001 certified Environmental Management System (EMS) provides consistency in how we plan, implement and review activities to achieve agreed environmental objectives.

In 2025, Thiess advanced its sustainability performance by recycling or reusing 38% of waste, achieving a 24% reduction in Scope 1 emissions and a 31% reduction in Scope 2 emissions year‑on‑year, and sourcing 30% of electricity from renewable energy.