Extracting precious minerals & fossil fuels

• Some magma may cool and solidify beneath volcanoes, forming precious minerals such as copper, sliver and gold
• Locals living near volcanoes can be employed to mine these minerals, which provide them a source of income
• Governments may sell these precious minerals to generate revenue, which can in turn be used to provide social services to locals such as education and healthcare
• Volcanic materials, such as ash and sand, may also be mined and used as construction materials
• Example

  Thousands of locals living on Mount Merapi are employed to mine volcanic sand as it is suitable for constructing buildings