The task
The diagram below shows the process by which bricks are manufactured for the building industry. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
| Step | Description |
|---|---|
| 1 | Clay is dug from the ground using a large digger |
| 2 | The clay is placed on a metal grid to break it into smaller pieces |
| 3 | Sand and water are added to the filtered clay in a mixing machine |
| 4 | The mixture is cut into brick shapes by a wire cutter or moulded by hand |
| 5 | Bricks are dried in an oven for 24 to 48 hours |
| 6 | Bricks are fired in a kiln at a moderate temperature of about 870 degrees |
| 7 | Bricks are fired again at a high temperature of up to 1300 degrees |
| 8 | Bricks are cooled in a cooling chamber for 48 to 72 hours |
| 9 | The finished bricks are packaged and delivered by lorry |