Hazardous substances Law and legislation 55 Safety measures 49 Transportation 43 Chemicals 41 Health aspects 40 Environmental aspects 32 আরও ... Risk assessment 22 Pollution 18 Hazardous wastes 17 Safety regulations 16 Accidents 14 Industrial safety 13 Management 13 Labeling 12 Physiological effect 12 Classification 11 Gases, Asphyxiating and poisonous 10 Environmental health 8 Toxicology 8 Government policy 7 Industrial toxicology 7 Prevention 7 Security measures 7 Industrial hygiene 6 Inland water transportation 6 Poisons 6 Product safety 5 Radioactive substances 5 Standards 5 কম ...