Usually, a material like wood is reused by contractors within
the project as many times as possible to avoid the cost of collection
and disposal and the extra cost of virgin material. Scrap dealers
usually collect scrap metals (mostly off-cuts of metal sheets and
bars), as well as other salvageable materials generated. These are
resold to secondhand buyers or, if metals, to metal smelting companies.
Although the collection and sale of these materials by collectors
is a positive application of reuse and recycling, it is not a
system that functions at an efficient level (Esin and Cosgun,
2005). As is the fate of most MSW components, some construction