JT 7000 
    Buffer storage with 9.1 yd³ (7 m³) capacity hopper and a bi-directional, variable speed auger
    Reservoir for intermediate concrete storage. Areas of application
  mainly in tunnel concreting. The jumbo trough can be individually
  designed for a project and has a concrete capacity of 2.6 to 19.16 yd³
  (2 to 15 m³). A jumbo trough typically has several mixing spirals for
  homogenising the material.