It is used in the manufacture of low-volume compost. The materials are introduced in a vertical silo of about 2 or 3 meters high, round or square, whose sides are openwork to allow aeration. The silo is loaded from the top and the compost already prepared for discharge through an opening that exists under the silo. If the amount of material is small, the silo can work continuously: the mature compost is removed while the silo is recharged from the top.
