ICMM and INAP collaborating to help mining operations address   water pollution

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ICMM and the International Network for Acid Prevention (INAP) announce a collaboration to support mining companies to prevent and reduce water pollution caused by acid rock drainage and metal leaching from mines, with the aim of ultimately safeguarding water quality and reducing long-term remediation costs.  

The collaboration will focus on developing a new resource to support the implementation of INAP’s highly regarded Global Acid Rock Drainage (GARD) Guide in mining operations by non-specialist audiences working on sites and at a corporate level. The results are expected to be published in early 2025.  

Acid rock drainage and metal leaching are natural processes that occur when sulphide minerals in rocks are exposed to air and water, producing sulfuric acid. When waste material that contains sulphide minerals is not managed in the right way on mine sites, it can accelerate these natural chemical processes and result in highly acidic water which can leach metals from the rock into the surrounding environment. Preventing and managing the impacts of acid rock drainage and metal leaching requires informed site-level planning from the start of a mine's operation through to its closure.