Silos for dry additive are used for mineral filler, dust or lime in drum mix plants or batch plants. The silos comes in six different sizes, from 350 to 900 BBL capacity. Options include leg extensions, baghouses, self-erect and portability packages. Liquid additive systems are also offered. They are skid mounted and come complete with system controls, pumps valves and hot oil coils for materials that require heat. Liquid systems come in either 1,000 or 2,000 gallon size.