The Chapter describes the properties of the main materials—charge components for small blast furnaces (primary and secondary materials). The requirements for the quality of agglomerated products for blast furnace charge—agglomerate, pellets and briquettes are given from the standpoint of the influence of chemical composition, FeO content and harmful impurities, strength, reducibility and softening. In the appendix to the properties of briquettes, special attention is paid to the need to adjust the drum sample method and the incorrectness of using the quality criteria adopted for pellets in this case. The methods for determining the reducibility and softening of agglomerated products are described and a theoretical analysis of the mechanisms for maintaining the strength of briquettes during high-temperature heating in a reducing atmosphere is given. The efficiency of using agglomerated products in the blast furnace process is analyzed from the standpoint of compliance with the requirements of the Best Available Technologies (BAT).