Agriculture, manufacturing and tourism are the backbones of the economy of Nakuru. The area surrounding the city is known for its vast agricultural potential with numerous small farms and also vast agricultural enterprises. The main crops grown around Nakuru and marketed in the city include coffee, wheat, barley, maize, beans and potatoes. These crops are stored in massive silos at the outskirts of the city by the National Cereals and Produce Board and Lesiolo Grain Handlers Limited. The crops provide the primary raw material for the manufacturing industries found in Nakuru and Nairobi. These industries include flour milling and grain ginneries. Dairy farming is a key economic activity and provides the inputs for various milk processing plants around the city.