Hazardous wastes : these are wastes which are characterized by their hazardous properties with respect to the environment or health, associated with short-, medium- or long-term effects, whether direct or indirect. For this reason, these wastes must be collected, transported and processed in an appropriate manner.
Hazardous household wastes : these are toxic, inflammable and/or corrosive wastes which are generated by households. In general, this category of wastes includes paints, lacquers, adhesives, waxes, rust inhibitors, solvents, fluorescent tubes, neon lights, cosmetics, pesticides and waste oil.
Hedging: hedging is a strategy for the provision of cover against price fluctuations. Hedging is applied where doubts exist with regard to future market trends. This situation frequently occurs in the context of metal trading.
Household wastes : these are wastes which are collected in the context of public waste disposal services. They include the residual fraction of household refuse, large items which are collected door-to-door, selective collections, wastes collected for landfill, and items which are unsuitable for sorting and composting.
Hydrocarbons: a hydrocarbon is an organic compound which is comprised exclusively of atoms of carbon (C) and hydrogen (H). Hydrocarbons are inflammable, and do not mix with water. Refined from crude oil, they are specifically used as fuels for combustion engines.