For example in some country , there are many natural resources. One of these natural resources is coal. We find coal in the ground by digging mines, or mining. Coal has many uses. Coal is burned in some of our power plants to produce electricity. The electricity is used by factories to power machinery and in homes for light and heat. Because it can be used in so many ways, it is important that we take coal from the ground. This creates many jobs. In some small communities,Pennsylvania for example, coal mining is very important to their economy.