This document discusses moving towards more sustainable practices for foundry waste in South Africa. It notes that spent foundry sand is currently classified as hazardous waste, which creates high disposal costs for foundries. However, recent testing of spent sand from four foundries found it should be classified as inert waste instead. The document advocates influencing regulations, drawing on international examples of reusing spent sand in road construction and cement production, and developing alternative reuse options and a shared testing facility in South Africa. Progress has been made since 2009 but more work is needed across government, industry and research to address this issue.