On a recent trip to New Zealand, SCAFCO Grain Systems Company Vice President Dan Wambeke visited a SCAFCO installation at a milking parlor. The larger Model 2016HBTTZ4 silo on the right stores ground corn. The two 9′ hopper bottom silos on the left store palm kernel expeller and soybean meal, respectively. Dan notes that the contents of the smaller silos can be extracted by activating a magnetic vibrator on the bottom of the hopper when a void is sensed in the silo, stopping product from flowing to the discharge.