A waste minimization strategy in mining is a formally documented, site-specific plan that outlines the goals, approaches, technologies, responsibilities, timelines, and performance indicators associated with reducing waste generation and its associated impacts across all phases of mining operations. Such a strategy typically follows the waste management hierarchy: prevent, reduce, reuse, recycle, recover, and only as a last resort — dispose. In bauxite mining operations, a waste minimization strategy may include targets for reducing the ratio of overburden stripped per tonne of ore mined, along with investment in bauxite washing circuits to reduce reject clay volumes. Gold mine waste minimization strategies often incorporate objectives for reducing tailings production through higher recovery rates, minimising hazardous reagent use, and implementing closed-loop water systems. Iron ore operators embed waste minimization into their geometallurgical models to ensure that ore boundaries are accurately defined and dilution is controlled. Diamond mine waste minimization strategies typically address the reduction of kimberlite handling through on-line ore sorting and improved process plant efficiencies. Each strategy includes monitoring and reporting frameworks that measure progress against baseline waste generation rates and guide continuous improvement. Stakeholder engagement and regulatory reporting are integral components of a robust waste minimization strategy.
