You should spend about 20 minutes on this task. The diagram shows the different stages in the production of lead. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words.

The diagram explains the way in which metals are made for the building industry. Overall, there are 8 stages in the process, beginning with the mining of the rock and casting the shape. To begin, the rock which contains lead and other metals is drilled with drilling machines on the site. This metal is then […]