Dudley Colliery. 1st edn OS mapping shows a Gin within the colliery. 2nd edn OS mapping shows expansion of colliery buildings and spoil heaps. Opened 1854, closed 1977.

Cramlington Wagonway (Dudley Branch). Shown on 1st edn OS mapping to run east from Dudley Colliery, NZ 2579 7386. On 2nd edn mapping, it had been extended to the north west to join the NER (SMR 1063) at NZ 2574 7397.

Mineral Railway, enters/leaves County at NZ 3105 7342 and joins the East Holywell Colliery Railway (SMR 1051) at NZ 3129 7280.

West Cramlington Wagonway, enters/leaves county at NZ 2913 7374. Shown on 2nd edn OS mapping as Backworth Colliery Railway(West Cramlington Branch. Serves the Backworth Collieries. Joins the Backworth Wagonway at NZ 3045 7164. Opened in 1838. Closed in 1849 when West Cramlington was linked to the Newcastle & Berwick Railway.
A section of the West Cramlington Wagonway is visible as earthworks on historical air photos between NY26750 75740 and NY28345 74507. Visible over a distance of approximately 2km. The more recent imagery shows that this feature survives as a hedgeline trackway in some parts and has been integrated into the local network as a cycle track in some other parts.
A further section is visible between Seghill (NY28450 7443) and Havelock Place (NY2984 7283). This section is visible on the 1940s air photos mostly as earthworks though a section at Seghill had already been repurposed as a road by 1947.

Backworth Colliery (C Pit). Opened 1856. 2nd edn OS mapping shows colliery has expanded, with spoil heaps and internal system of wagonways. Closed before 1900. Adjacent to the Colliery, on the western side of the railway was the Hotspur Brick Works, (HER 2217). After the C Pit closed, the site was used for spoil disposal and over the years a massive conical heap developed. By the 1950s the heap was viewed to be a hazard to aircraft approaching the expanding Newcastle airport. The top of the heap was therefore removed. Dumping ceased in the 1970s. The area north of B Pit was used instead.

Cramlington Wagonway, enters/leaves the county at NZ 2951 7414. Shown on 2nd edn OS mapping as Cramlington Colliery Railway. Had an old engine house (SMR 1173). Southern Terminus was at Cramlington Staiths (SMR 2112) in Northumberland Dock. 2nd edn OS mapping also shows a new branch to a new Cramlington Staith (SMR 2199) at NZ 3341 6609. Opened 1823, closed 1898. Jointly owned by Cramlington & Backworth Collieries. Later extended to Shankhouse in 1847 & East Hartford in 1866, Dudley in 1854 (SMR 1854), West Cramlington in 1898 and Burradon in 1912. May have been linked to the NER Riverside Branch (SMR 2146) by spur (SMR 2145).

The Seghill Wagonway was opened for mineral traffic in 1840, from Seghill Colliery to Howdon. Built by the owners of Seghill Colliery, who had previously used the Cramlington Wagonway for their coals. The line later became the first section of the Blyth and Tyne Railway - work on this stretch of line started in 1845 and finished in 1847. From Seghill to Prospect Hill there were rising gradients of 1 in 228, 1 in 127, 1 in 69, and from Prospect Hill to the Tyne a series of falling gradients. The line was principally worked by stationary engines, one at Prospect Hill, hauling up the loaded wagons from Holywell and empty wagons from Newcastle and North Shields Road, the other at Percy Main, hauling empty wagons from the staiths. From Prospect Hill to Percy Main and from Percy Main to the staiths the loaded wagons ran by gravity, unwinding a tail rope which was to bring back the empty ones. The southern end was extended and realigned with the construction of the Northumberland Dock in 1857. Marked on 2nd edn mapping as the NER Newcastle, Backworth & Morpeth Line. Had Holywell Station (HER 1107) and Prospect Hill Station (HER 1145). Its southern limit was at Northumberland Dock (SMR 2111). The line is also marked as the NER Blyth & Tyne Section on 2nd edition OS mapping. The Blyth & Tyne Railway was sold to the NER in 1874.

800 yard rifle range with butts, targets and two flagstaffs shown on 2nd edition Ordnance Survey map. {1}. Shown on fifth edition of 1960 as disused.In 1894 Joseph Patterson of Hartley East Farm let a field to the army for use as a rifle range. This started an argument between George Ewan, who had built cottages on St. Mary's Island and his landlord Lord Hastings of Delaval, because visitors to the island were in danger from bullets {2}. The earthwork remains of old butts are still visible and shown on modern OS maps.

Hydraulic Pump shown on 2nd edition Ordnance Survey map.

Windmill, shown on 2nd edition Ordnance Survey map on Whitley Links