boundary 52   103-2 The management approach and its components 52-53   103-3 Evaluation of the management approach 53, 66   GRI 306: Effluents and Waste 2016 306-2 Waste by type and disposal method 66 Antofagasta Minerals reports waste treatment methods by hazardous, nonhazardous and domestic waste (which is also non-hazardous).