Borgestad 6 AL – 80
— 28/07/2022Found by Ian Suddaby at the old Bonnyside Brickworks, Bonnybridge. This was found in a pile of debris that contained large quantities of test samples that were marked for use in the brickworks laboratory. AL – 80 = 80% Alumina content. Höganäs Borgestad, brick manufacturers, Sweden. At Höganäs Borgestad, we started producing refractory bricks in 1825,…