All industry is made up of four sectors that are a linked together like a chain: primary, secondary, tertiary and quaternary industry. Industries in the primary and secondary sectors are the ...

In modern economic models that break industry into five sectors – primary, secondary, tertiary, quaternary and quinary – industry work and workplaces fall into the secondary sector ...

All industry is part of a chain that starts with primary ... and secondary industry: the processing of these raw materials into usable products. Next in the chain come tertiary and quaternary ...