The diagram below illustrates the process where bricks are made for the building industry. Summarie the information by selecting and reporting the main features, and make comparisons where relevant.

“

This

diagram shows how

bricks

are made. The process involves seven main steps, starting with clay in the ground and finishing with a batch of newly-made

bricks

being delivered to a customer.

First,

a digger extracts a large amount of clay from a pit in the ground. Using a metal grid and a roller system, big chunks of clay are sorted and broken down into smaller pieces, which are

then

mixed with sand and water. Once

that is

done, the mixture is formed into the correct shapes with either a mould or a wire cutter. The

bricks

then

spend one to two days drying off in an oven before being moved through a series of very hot kilns: the first one bakes the

bricks

at temperatures between 200 and 980ºC, and the second is even hotter, at 870 to 1300ºC. The longest step so far comes next: the

bricks

go through a two-to-three-day cooling process before they can

finally

be packed on to skids and delivered to wherever they’re needed.”