Killingworth Colliery, West Moor Pit. 1st edn OS mapping is unclear but seems to show two shafts, a cistern, a sluice and a gin within the mine. The colliery was served by a wagonway (SMR 1083). This may have been the pit opened by the Grand Allies in 1761, it was certainly opened before 1806 and was closed by 1900. Lord Ravensworth & Partners owned it in the 1800s. Colliery disasters - explosions killed 5 on 18 january 1844, 10 on 3 April 1845 and 9 on 31 October 1851.