It is built of local sandstone with dressed quoins, with brick lining.

A brick lining and an iron stairway have been added to the interior.

The foundation was natural/emplaced and the lighthouse was constructed out of limestone with a brick lining.

There's growth on the brick lining, and the surface is rough.

Both the bank and river bed have been excavated and strengthened with a brick lining.

The biggest surprise was how well the brick lining had stood up to the fire.

However, with the passage of time the brick lining has been destroyed.

A significant amount of mercury was recovered from the brick lining of the Scott furnace.

The stones that comprise the portal ring extend between 30 to 36 inches from the face of the portal where they interface with the brick lining.

The tunnel is constructed with an arch brick lining and measures some 27'6" across and 20'9" high.