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General term for heavyweight grades of paper that are used for containers, boxes, cartons and packaging materials.
3.
Rating of waste or recyclable materials into homogenous categories by type and quality.
5.
A process of producing fuels from waste by heating it in an oxygen-deficient atmosphere.
6.
Unwanted materials remaining from manufacturing processes, or refuse from humans and animals.
7.
A mixture of garbage, degradable trash and soil in which bacteria in the soil break down the mixture into a soil conditioner (not a fertilizer). It has high organic content but low nitrogen.
8.
To use a product repeteadly in the same form (e.g.: glass bottles, cloth diapers).
Down:
2.
To turn in a secondary material to the original supplier.
4.
The act of obtaining a secondary material through collection, sorting, etc.