Industrial Photography Around The World

Primary - This involves the extraction of resources directly from the Earth, this includes farming, mining and logging. They do not process the products at all. They send it off to factories to make a profit.
Secondary - This group is involved in the processing products from primary industries. This includes all factories—those that refine metals, produce furniture, or pack farm products such as meat.
Tertiary - This group is involved in the provision of services. They include teachers, managers and other service providers.
Quaternary - This group is involved in the research of science and technology. They include scientists.