Environmental Sustainability
OTML has a comprehensive environmental management program designed to limit environmental impacts and to manage and monitor the impacts from mining operations.Environmental Mitigation & Remediation
Since 1998, over 3 billion kina has been invested in reducing the long-term impact on the river system including; removal of pyrite from the tailings, addition of limestone to waste rock and tailings to maintain alkalinity in the river system and the dredging of sands from the river bed approximately 100km downstream of the mine at Bige.
Amount invested in environmental remediation since 1998 (Kina)
Ok Tedi Environmental Impacts
An overview of the past and present environmental impacts.
Sediment Mitigation
Our dredging actively mitigates the amount of sediment in the rivers around our mine.
Acid Rock Drainage Mitigation
Our acid rock draining mitigation strategies are leading the world for large copper mines.
Fish Stock Biodiversity
We monitor and address negative impacts on fish stock biodiversity around our mine.
Dissolved Copper Concentrations
We monitor dissolved copper concentrations to ensure they are within safe levels.
Compliance Monitoring
We undertake comprehensive environmental monitoring and reporting.