Washington 'F' Pit - MySunderlandWashington 'F' Pit Museum is a former coal pit that is believed to have been sunk around 1777, and continued to be in use until an accident in 1796. The pit has survived to become one of Sunderland's best historic sites, and a glimpse into our rich coal mining heritage.About Washington F Pit Washington 'F' Pit Museum was opened in 1976 by the Washington Development Corporation, with the Tyne & Wear Museums Service taking responsibility for this in April 1984. It is currently managed by Sunderland City Council, and https://www.seeitdoitsunderland.co.uk/washington-f-pit