The storage of large quantities of bulk material can be in silos, big-bags and bulk containers, equipped with suitable discharge aids and extractors for a safe and controlled extraction of the required products. Silos can be filled by pneumatic bulk truck or from small 50kg or one ton bulk bags. In case of larger capacities, automatic bag splitting machines is recommended. Correctly sized dust filter must be installed and together with over/under pressure relief safety valve on silos which are filled by pneumatic mode.