Results
Stabilised priority slopes and reduced erosion-related disruptions across multiple areas
Maintained operational continuity around critical haul routes and plant interfaces
Delivered a scalable program that grew from a two-month scope to an 18-month, multi-stage delivery
Improved resilience of treated slopes through successive wet seasons with defined inspection/maintenance practices
Project
Solution
Implemented a site-specific erosion control system integrating high-tensile mesh and erosion control matting anchored to design depth
Used dimensioned installation methodologies (panel sizing, overlap, pin spacing) to ensure predictable performance across varied slopes
Sequenced works into staged packages to add new areas without disrupting ongoing production
Established inspection and maintenance routines through the wet season, with trigger-based interventions following heavy rainfall
Applied strict HSE and environmental controls for runoff, sediment capture, and vegetation management around live assets
Project
Challenges
Extreme tropical rainfall driving rapid erosion and reactivation of treated slopes
Highly erodible soils and steep working angles requiring reliable, constructible systems
Live operations and critical haul/plant interfaces limiting working windows
Remote island supply chain constraints impacting materials, plant, and spares
Environmental controls needed to manage sediment, runoff, and vegetation impacts
Project
Overview
An initial two-month erosion control package at Lihir Gold Mine evolved into an 18-month program as additional priority areas were identified and wet-season conditions intensified site risks. Located in a high-rainfall, highly erodible tropical environment, the project required robust solutions that could be installed safely around live mining operations and maintained through successive weather events.
Geovert developed and delivered a site-specific erosion control approach that balanced rapid mobilisation, constructability, and long-term performance while navigating remote island logistics and access constraints.