When desired, silos, bins, and tanks are emptied by gravity flow, sweep augers, and conveyors. They are also used around the farmyard to run chippers, grain augers, and conveyors. Feeding is achieved by using moveable feeding augers with scrapers/rigid counter arms. The company produced the Farm King line of grain augers, snowblowers, mowers and compact implements. Later the region's plants produced truck motors, augers and excavators. Silos storing grain, cement and woodchips are typically unloaded with air slides or augers. Triturating juicers (twin gear juicers) have twin augers to crush and press produce. Surface survey may also include mini-excavation techniques such as augers, corers, and shovel test pits. Hand augers are useful for clearing sink and bathtub drains. Handheld augers can also be used for making holes for garden planting. Augers are also used to force food products through dies to produce pellets. Deep soil mixing adds iron to the native soil and mixing it with large augers. Advantages of handheld drain augers include low relative cost and ready availability through hardware stores. In older Gleaner machines, these augers were not present. A thermal screw desorber typically consists of a series of 1-4 augers.