Different types of rock can be found in different parts of the country. Limestone, which is also called Portland stone, is used in buildings such as the Bank of England. Rocks are removed from the ground by using explosives or by cutting with saws.

This clip is from:
Science Clips, Rocks and Soils
First broadcast:
9 October 2007

This clip could be used for a class discussion about the use of rocks. Discuss how the rocks are removed from the ground. How many different types of rocks are known by the children?