This is the site of the Lamb Pit of the East Cramlington Colliery and brickworks. The site was first a colliery and a brickworks second. Fireclay was obtained as the coal from the underground ground levels called 'seams', shaped, dried and fired kilns to produce white brick and firebrick products. The brickworks was operated under the independent Cramlington Coal Company and then the Hartley Main Collieries prior to nationalisation. Bricks produced here were of a white colour - some of the many thousands would bear some identifying letters. Many air raid shelters in the local area were made out of these bricks.