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

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diagram shows how

bricks

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

bricks

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being delivered to a customer.

First,

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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

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mixed with sand and water. Once

that is

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

bricks

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then

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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

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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

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

finally

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