Bricks are made from clay and baked in a kiln - also known as clay firing - at a temperature of more than 1100 Celsius
This process ensures they retain their natural colours for a very long time, and also strengthens the brick making
it very durable,
The raw clay is first mined then goes through a mixing process and an extrusion process before the clay- firing.
Raw materials (natural clay minerals, including kaolin and shale) are crushed and ground.
Small amounts of manganese, barium, and other additives are added to produce different shades.
The ingredients are mixed with water and go into a de-airing chamber, compacted and finally extruded out of a die (for shaping).
Because excess moisture could cause cracking during the firing process, the bricks are dried before being put into kilns (large ovens that can produce the extremely high temperatures required).
Finally, the clay bricks are left to cool down before being graded and loaded onto pallets to be transportedn