This article looks at what the mill can do to improve kernel extraction ratio by having a closer look at the processing plant and try to understand the principles involved. Palm oil mills in Malaysia use a combination of dry and wet separation systems to recover kernel from the cracked mixture. The dry separation known generally as Low Tension Dry Separation (LTDS) makes use of winnowing velocities ranging from 8 m/s to 16 m/s to give reasonably acceptable separation of light particles. If the velocity is kept below 10 m/s it is possible to get kernel losses below 0.5% at the expense of a slight reduction in separation efficiency.