The first evidence of mining is from bell-shaped pits and monastic mine workings discovered in the 20th Century during tunnelling. Ashington developed from a small hamlet in the 1840s when the Duke of Portland built housing to encourage people escaping the Great Famine of Ireland to come and work at his nearby collieries. As in many other parts of Britain, "deep pit" coal mining in the area declined during the 1980s and 1990s leaving just one colliery, Ellington which closed in January 2005. In 2006 plans for an opencast mine on the outskirts of the town were put forward, although many people objected to it. During the heyday of coal-mining, Ashington was considered to be the "world's largest coal-mining village". There is now a debate about whether Ashington should be referred to as a town or a village; if considered as a village it would be one of the largest villages in England.