Addison Colliery was the property of the Stella Coal Company, the pit being sunk in 1864. Addison Pit was situated close to the Newcastle & Carlisle Railway, to which it could be connected by a loop line. The mine workings ran westwards because of a large geological fault east of Addison village. It was eventually possible to walk underground from Addison to Clara Vale Pit. The name Addison came from Mr Addison Potter, whose family was connected with Towneley Colliery. Mrs Addison Potter cut the first sod of the Addison Pit in an impressive ceremony on January 26th 1864. Addison Pit was the first colliery in the world to have underground telephone. Experiments using Professor Graham Bell's telephone were carried out in 1877. It was connected to Hedgefield House in which John B. Simpson, one of the colliery directors, lived from 1864 to 1894. The first offices of the Coal Company were rooms in Hedgefield House. In 1894 separate offices were built. Hedgefield House is now a hotel. In 1883 the output of coal was 120,000 tons, with about 500 men and boys employed. In 1894 the output of coal was 254,000 tons and 1,000 workmen. By 1923 the output was 1,058,740 tons with 5,500 workmen. A little west of Addison Pit was an old shaft, formerly used as a pumping shaft to clear Stargate from water. The shafts at Addison were sunk in 1865 but coal was also drawn from two drift mines, the Kitty and Atkinson Drifts. The winding engine was steam driven, installed by Sir William Armstrong of Elswick in 1864. In 1924 the Atkinson Drift was closed. It was later used as an air raid shelter in WW2. In 1946 there was an explosion in the pit which killed two people. The pit went into decline. The village was depopulated and finally abandoned in 1958. The houses were then demolished. The pit finally closed in 1963 {1}.

Mineral lines from Crawcrook and Greenside ran to Stargate Pit (HER 3319) where the coal was transferred on to wagons that ran down an incline (HER 5038), then through this tunnel under the road in the grounds of the coal company offices (HER 5036) to Addison Colliery (HER 5033). A second tunnel was eventually built because the first was too small for the 17 ton trucks that replaced the older 10 ton trucks on the incline. The coal was then taken by rail to markets all over the country {1}.
The second tunnel is shown to the east of the old tunnel on the Ordnance Survey 25 inch map of 1920.

This was a horse training and marshalling area for military horses before they were posted to the front in France {1}. The site consisted of a series of stakes to which the horses were tethered.

There were First World War practice trenches in this field (known as Trench Field), now ploughed away {1}.

One of three such sites (there used to be one at Kenton plus a third unknown site). It was used to triangulate the altitude and range of a zeppelin. It consists of a circular reinforced concrete base with a telephone point, but the compass direction dial has gone {1}. The circular planar surface is 1.5m in diameter and 0.6m high. It contains a recess for a field telephone connected to the anti-aircraft guns command post.

18th century house and 19th century additions. 18th century part - local pinkish brick in English garden wall bond, now mostly pebbledashed. 19th century part - snecked, tooled sandstone with ashlar quoins and dressings. Baronial style. 18th century part - 2 storeys, 6 bays, with rear wing forming L-shape, late19th century sash windows in box frames with tooled stone lintels and projecting stone sills.19th century part in baronial style: 3 storey battlemented tower with first-floor drip string and eaves corbel table with animal angle gargoyles {1}. Owned by the Duke of Northumberland until the 1970s but rented out. In mid C19 it was occupied by J.T. Ramsay and his family. He was accused of stealing fittings and goods from the hall after becoming bankrupt and was taken to court by the owner. Later occupants were Michael Spencer (son of John Spencer, steel manufacturer and coalowner of Newburn), the Appleby family and Dr Telfer. In 1980 the house was sold to developers and split into 2 dwellings (Walbottle Hall and Millstone House). 3 houses were built on the site of the walled garden in the 1970s (Nos. 1-3 Walbottle Hall Gardens). The pebbled drive to the Hall has been moved. The gate piers are not original but they are in-keeping.

Stone barn to rear of walled garden (HER 5026). South elevation is of brick, others are of stone. The barn has been sympathetically converted into a house. Painted green window frames and doors using original openings. Slate roof with roof lights.

Walled garden to the rear of Walbottle House. Walls are of handmade brick and stone rubble. Decorative iron gate in east wall. Entranceway in rear wall with stone lintel and 20th century steel gate.

House, now 2 separate dwellings (Walbottle House and Walbottle House North) previously 3 separate dwellings. Early 18th century; late 18th century rear wing; considerable 19th century and 20th century alterations. Coursed rubble, pebbledashed, with graduated green slate roof; stone gable copings on curved kneelers; yellow brick chimneys. Rear wing red brick with hipped roof of similar materials. 2 storeys. 20th century glazed door with overlight; 20th century cross casements.19th century pent left extension. Wing probably once a stable. Pointed-arched first floor window with Y tracery. On rear elevation a round-arched window in stone surround with keystone, impost blocks and radial glazing bars. 20th century extension not of interest. Interior - dog-leg stair with stout turned balusters and square moulded handrail; 3 early19th century chimneypieces complete with grates, and one room with cornice of the period {1}. In 1855 it was the home of the Potter family, coalowners. Then the Lindsay family, shipowners. In later years it was owned by Dr Messer, sociologist and educationalist, who was Medical Officer of Health to Newburn Urban District Council. He was responsible for the construction of Lemington Adult School.

Mid 18th century farmhouse and adjoining stable. Built of reddish-brown brickwork with some use of coursed rubble masonry. The annexe retains a pantiled roof, the remainder of the block has been reroofed in asbestos sheeting. In the late 18th century or early C19, a dairy and barn were added. The dairy is of masonry construction, now rendered with purlin roof with sarking boards. The barn is of coursed rubble and brick. The boarded stable door sits under a massive lintel. In the late19th century the house underwent massive refurbishment which removed all earlier details. The eaves were raised, part of the south elevation was rebuilt and a new roof was constructed. The stair was rebuilt and doors of four sunk moulded panels fitted throughout. The floor structures were renewed.19th century fireplaces were fitted in parlour and bedrooms. A door was broken through the east end of the first floor passage at the back of the house. The building was entirely refenestrated with four-pane sashes to south elevation and minor windows elsewhere. Minor openings in the barn and west gable of the house were blocked. The barn and stable were reroofed. The 1st edition Ordnance Survey map shows the farmstead much as it is now although it now lacks the timber sheds which extended to the west of the barn. The east range shown on the map is also now gone. The horse-engine attached to the barn on the first edition is no longer present. By the second edition OS map the courtyard buildings were complete and the courtyard subdivided {1}.