Primary industries are found where the resources are found eg. coal mines have to be found on coal fields.

The location of manufacturing industry is influenced by the following factors

• labour supply - how easy it is to get workers
  
• transport - by road, rail, sea and air to move goods and workers
  
• site - is the land flat, dry and with room for expansion
  
• raw materials - being near to heavy, bulky raw materials will help reduce transport costs
  
• market - being close to customers also reduces transport costs
  
• power supply - most modern industry uses electricity
  
• government aid - are grants, loans, training or other kinds of help available for a site

Market and labour supply are very important in service industries.

Quaternary industries are less tied down to a particular location.