An Engine House on the Seatonburn Wagonway (HER ref. 1065).

Millbank Pit appears on the 1st edition Ordnance Survey Map but is not shown on the 2nd edition, so had presumably ceased operations by 1894/5. Opened on 23 February 1775 by Messrs Bell & Co.

Belle Pit is shown on the 1st edition Ordnance Survey Map; the 2nd edition shows an expansion of spoil heaps.

A Wagonway from Killingworth Wagonway (HER ref. 1083) to Willington Wagonway (HER ref. 1164), of which it may represent an earlier course. Passes through Bewick Pit (HER ref. 1161).

A possible old wagonway through Willington appears on the 1st edition Ordnance Survey Map, but is not marked as such. This is probably the line of part of the original Willington Wagonway, built around 1762, eventually superseded by HER ref. 1164 to the west, c.1820.

An Old Engine Pit, presumably a Coal Mine, is shown on the 1st edition Ordnance Survey Map, but it is not clear whether it was working at that time (c.1858). This may have been the Engine Pit opened in 1775 "at Willington" by Messrs Bells and Brown.

Edward Pit (Coal). Was served by Willington Wagonway (HER 1164). Opened 1810 by Messrs Bell & Co. Edward Pit was the upcast shaft for Willington Colliery. The colliery closed in 1889 but reopened in 1913 for another 18 years. Edward Shaft was refurbished and carried on after 1913 as a ventilation shaft for Wallsend Colliery.

Willington Wagonway started at NZ 3172 6840, near Old Engine Pit (HER ref. 1166) and served Edward Pit, Bigge Pit and Willington Colliery Low Pit (HER refs. 1165, 1163 and 1189), crossing Willington Dean by Viaduct (HER ref. 1185). An earlier course of this line might be represented by an earlier wagonway (HER ref. 1168). Its Southern terminus was at Willington Staith (HER ref. 2102). It is marked as Disused on the 2nd edition Ordnance Survey Map (1895/4 survey). This line followed at least part of the course of the Grand Allies' Willington New Line, from Battle Hill to Low Pit, opened in 1820 and worked using an inclined plane system. Archaeological fieldwork in the area of Battle Hill revealed insubstantial traces of this wagonway.

Bigge Pit. OS 1st edition mapping shows a Reservoir and an Engine House within the site. Three wagonways (HER 1160, 1162, 1164) passed the site and may have been associated with it. Owned by Messrs Bell and Brown. They met in the 18th century when Matthew Bell was a draper and William Brown went into his shop to buy flannel for his pit-clothes. They set up in partnership as mining speculation. In 1786 Matthew Bell died. His share of the company passed to Matthew III who married Sarah Frances Brandling. Their heir was Matthew Bell IV (born 1793) the MP and Lt Colonel who lived at Woolsington Hall. He became chief owner of Willington Colliery aged 48. On 31 December 1829 4 men were killed by an explosion. By the 1830s the High Main Seam had been worked out by the wasteful use of pillars. 3/4 of the coal was sterile due to creep (rising up of the soft clay floor of the seam to block the airways and transport roads). So in 1831 the Bensham Seam was explored. A shaft was sunk from the High Main. When the seam was broken into a huge quantity of gas was encountered and the resulting explosion killed 3 men and 8 horses. 14 men were burnt. 4 of them later died. The shaft was later vaulted over with iron and bricks to channel the gas to the surface and burned as a flare. The Bensham Seam was opened again in 1840. On 30 March 1840 8 men were burnt, one of them died. Under the ownership of Matthew Bell IV and George Johnson Esq, there was another explosion on 19 April 1841 which killed 32 people and 2 horses. Only 3 men got out alive. John Johnson, the acting viewer and adoptive son of George Johnson, heard the explosion from Willington Cottage, and was at Bigge Pit in twenty minutes. The stables were on fire and the smoke from burning hay had filled the mine. One pony was found alive in the mine. The inquest was held two days later at the Engine Public House, by Coroner Stephen Reed. The candle held by George Campbell had ignited the gas. Willington Colliery was advanced for the time. Coal was drawn in cages rather than corves. There was a separate upcast shaft (Edward Pit). A nine year old boy, Richard Cooper, was blamed for propping open the trapdoor he looked after. The colliery closed in 1889 but reopened in 1913 for another 18 years.

A Wagonway fron Bewick Pit (HER ref. 1161) to Bigge Pit (HER ref. 1163) is marked as ‘Old’ on the 1st edition Ordnance Survey Map, so was probably out of use by 1858.