This data set refers to the sinter production process, an intermediate step in the ironmaking and steelmaking industries. Sinter consists of a mixture of iron ore fines, fluxes, and metallurgical wastes (coke breeze or anthracite fines). It is used primarily within steel mills to improve the efficiency of blast furnace operations by providing a material that has better permeability and higher iron content compared to a raw mix of iron ore. Users of this data set should be aware that the environmental data is based on per metric ton of steel from the year 1998. The technological and environmental practices in sinter production may have evolved since then. Users should therefore consider site-specific current data and technological practices if available, especially for the evaluation of impacts in current scenarios. Additionally, if the user intends to apply the data in life cycle assessments, it's essential to consider the temporal relevance of the data and to check for more recent data where possible.