Heaton High Pit. The 2nd edition OS mapping shows the pit covered by trees, so probably out of use by 1895. The tree-planted mound (known as The Spinney) is believed to have been planted to commemorate those killed in the Heaton Colliery disaster of 3rd May 1815. A plaque was later set up by the National Union of Mine-Workers Northumberland area in November 1966. However, tree planting was common on disused mine sites and it is argued that this site has no significance to the disaster at all. (See HER 4149 for more information about the disaster).

NEHL - Part of the Heaton Main Colliery pits, they were known as some of the most advanced coal workings in the world thanks to their innovative pumping engines. There were two notable disasters at this pit - a fire in 1910 and a collapse of the colliery floors in 1813.