The tradition has grown up, and is kept alive by the "Association of Men of Kent and Kentish Men", that those born in West Kent – the area north of the river, but including Maidstone, Gillingham (other than Rainham), Rochester and Chatham – are labelled "Kentish Men" (or "Maids"); while those born in East Kent are "Men" (or "Maids") "of Kent". This labelling applies equally to those born in those parts of the traditional county absorbed into London since the 1880s. The power of the Medway has been harnessed for a millennium or more. Waterwheels and turbines powered by the waters of the Medway and its tributaries have been used to mill corn, make paper, make cloth, smelt iron, pump water and generate electricity. There are over 200 sites on the Medway where such usage is known. Today, only one mill is working for a commercial trade. See Medway watermills, and Medway watermills on the upper tributaries, the middle tributaries and the lower tributaries for more details. Medway scenes: