Hazard Assessment of Ores and Concentrates

Abstract Metal ores and concentrates are complex substances, for which the environmental and human health hazard identification and classification present particular challenges. These relate to the great variability of their compositions and the various mitigating effects of their mineralogical, physical structures, and forms. Based on the UN GHS guidelines, industry has developed a framework for consistent assessment of the hazard profiles of metal ores and concentrates, supported by research and data collection to ensure correct hazard classification of these materials. The resulting tiered approach integrates essential information about the chemical and mineralogical properties, bioavailability and toxicity of the known constituents of the ore or concentrate. The UN GHS classification conclusions are routinely used for hazard classification, risk assessment and identification of mitigation measures relevant to transport, handling, and storage of metal ores and concentrates.