Seaham Colliery (1849-1988)
Seaham Colliery was a coal mine near Seaham in County Durham. Sinking of the first pit began on 13th April 1849 for the by the third Marquis of Londonderry. In the late 19th century, the colliery was producing between 2,500 and 2,800 tons of coal per day, which were shipped at Seaham Harbour and Sunderland Dock. In 1864, nearby Seaton Coliery was acquired by Lord Londonderry and merged with Seaham Colliery. The mine suffered an underground explosion on the 8th September, 1880, which resulted in the deaths of 164 men and boys. At it height, in 1914, the colliery employed 2,574 people below ground and 520 above ground. The mine was nationalised in 1947 and in 1988 was merged with Vane Tempest colliery, and was closed by 1993.