It is composed of the raw material input bunker and helix. The purpose of this system is to convey the raw material, which is placed onto the ground by spilling, to the two horizontal U-type helices which will transfer it to the silos. Two directions are available at the exit edge of the helix and the desired direction can be implemented via the use of the pneumatic lid. The raw material carrying capacity of the helix is 4.5 tones/hour and its length is 6.5 meters.

The raw material input bunker has the 1240 x 1240 x 940 mm size and is manufactured from 3mm of iron sheet and has 0,75m³ volume.