Between the 18th and 20th century the town was dominated by mines with the largest being Polkemmet Colliery – a large coal mine, discovered in the town in the late 1800s – but this was closed in the 1980s as a result of damage by underground flooding during the 1984-85 miners' strike and never re-opened. The colliery buildings have gone, and the coal bings that once were prominent have now been removed. Work to dismantle Bing No 3, the infamous burning bing, started in August 2006 and was completed by February 2008. The last major outbreak of burning occurred in 1998.