Brick Field. 1861
(Source: Davison, P J, 1986. Brickworks of the North East, 187 site 16)

The Alexandrina Pit (Coal) served by the Rainton and Seaham Railway, (SMR 3216). Part of Rainton Colliery. Also known as Letch Pit. Opened in 1824. Owners were the North Hetton Coal Company (Earl of Durham, Messrs Wood, Philipson, Burrell and others) and Lady FA Vane Londonderry, Marquess of Londonderry (in 1850s). A picture of the colliery by Hair. Part of Rainton Colliery, which was opened before 1815 and closed in July 1978. Rainton Colliery included Adventure Pit (NZ 315 470), Dun Well Pit (HER 3206), Hazard Pit (HER 3212), Meadows Pit (HER 6848), Nicholson's Pit (HER 3201), North Pit (HER 3197), Plain Pit (HER 3198), Resolution Pit (NZ 311 476). In 1790 a boring had been put down in South Pit in East Rainton by a Mr Rawlings, to a depth of 10 fathoms. Whellan reported that in 1894 Rainton Colliery had 31 stationary engines, 38 boilers, 1185 workers and 835 workmen's houses.

The Robney Engine on the Rainton and Seaham Railway Pittington Branch, (SMR 3217).

With the development of more effective pumping engines to drain previously unworkable deep coal seams and the development of nucleated collieries, the Rainton Waggonway, especially its southern lines, was extensively upgraded and re-organised by the Tempests, to whom it had passed by marriage from the Whartons in 1730. A number of new branch lines to collieries were constructed between 1816 and 1826. The line to Pittington Colliery (which lies in County Durham) was opened in 1826. Most of this line lay within County Durham, except the Robney Engine, (HER 3218). It was part of the Londonderry Railway, which closed in 1896.

With the development of more effective pumping engines to drain previously unworkable deep coal seams and the development of nucleated collieries, the Rainton Waggonway, especially its southern routes, was extensively upgraded and re-organised by the Tempests, to whom it had passed by marriage from the Whartons in 1730. A number of new branch lines to collieries were constructed between 1816 (the Resolution Pit) and 1826 (Pittington Colliery). The line to the Alexandrina (or Letch) Pit (HER 3219) was opened in 1824. Hair says that the colliery was sunk to 80 fathoms, to the Hutton Seam which was in this area just over 4 feet thick. This was part of the Londonderry Railway, which closed in 1896.

Pontop Pit was the earliest in the area. It was situated on the site of the present primary school.

Quarry marked as Old on the 1st edition OS mapping, so was out of use by 1857.

The Quarry Pit was probably a Coal Mine, named after the nearby quarry, (SMR 3214). Located at the junction of Quarry House Lane and Robin Lane.

Hazard Pit was served by the Rainton and Seaham North Hetton Branch, (HER 3205). Part of Rainton Colliery. Opened in 1818. Owners were the North Hetton Coal Company (Earl of Durham, Messrs Wood, Philipson, Burrell and others) and Lady FA Vane Londonderry, Marquess of Londonderry (in 1850s). Part of Rainton Colliery, which was opened before 1815 and closed in July 1978. Rainton Colliery included Adventure Pit (NZ 315 470), Dun Well Pit (HER 3206), Alexandrina Pit (HER 3219), Meadows Pit (HER 6848), Nicholson's Pit (HER 3201), North Pit (HER 3197), Plain Pit (HER 3198), Resolution Pit (NZ 311 476). In 1790 a boring had been put down in South Pit in East Rainton by a Mr Rawlings, to a depth of 10 fathoms. Whellan reported that in 1894 Rainton Colliery had 31 stationary engines, 38 boilers, 1185 workers and 835 workmen's houses. Hazard Pit worked the Five Quarter Seam at a depth of 53 fathoms. The seam was 3 feet 7 inches thick. The Maudlin Seam was worked at a depth of 75 fathoms. The seam was 3 feet 8 inches thick. The Low Main Seam was 84 fathoms deep and 3 feet thick. Hazard Pit closed in 1934-5 20 fatalities while open. The headframe was transferred to Meadows Colliery. The site was reclaimed in the 1970s and grassed over and planted with trees. A railway embankment made from mine waste continues north and runs down past the cricket ground to Rainton Bridge.

Hetton Engine on the North Eastern Railway Durham and Sunderland Branch, (SMR 2994).