the diagram shows the stages of making bricks

This

diagram illustrates the way in which

bricks

are made for the building industry.

Overall

,

this

process has 7 stages, beginning with the digging up of

clay

from the ground and culminating in delivery.

To begin

, the

clay

used to make the

bricks

is dug up from the ground by a large digger.

This

clay

is

then

placed onto a metal grid. A roller assists in

this

stage to break up the

clay

into smaller pieces.

Following

this

, water and sand are added to the

clay

, and

this

mixture is turned into

bricks

either by placing it in a mould or using a wire cutter. These

bricks

are

then

placed in an oven to dry for 24- 48 hours. In the subsequent stage, the

bricks

go through a heating and cooling process. They are heated in a kiln at moderate and high temperatures (from 309c -509c), followed by a cooling process in a chamber for 48 hours.

Finally

, the

bricks

are packed and delivered to their destinations.