lou,
From the maps Gary is directing you to, you will notice that there were two brickworks, one to the east of Double and Single Junction Rows, and one to the west ( just east of the old Cramlington Waggonway, today the B1505 , with A189-the Spine Rd, alongside it.)
Many brickworks were alongside a coal pit- plenty of clay etc left over from the "sinking" of the pit, and plenty of coal for ovens etc.
Michael Dixon