This class includes :

Processing of metal and non-metal waste and scrap and other articles into secondary raw materials, usually involving a mechanical or chemical transformation process

Recovery of materials from waste streams in the form of :

separating and sorting recoverable materials from non-hazardous waste streams (i.e. garbage);

separating and sorting of commingled recoverable materials, such as paper, plastics, used beverage cans and metals, into distinct categories.

This class excludes the manufacture of new final products from secondary raw materials, as this is covered by corresponding sub-classes in Manufacturing.