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ore dressing
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English
Wikipedia
has an article on:
ore dressing
Wikipedia
Noun
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ore
dressing
Any
treatment
of an ore used to
concentrate
its
valuable
constituents (
minerals
) into
products
(
concentrate
) of smaller
bulk
, and simultaneously to
collect
the
worthless
material (
gangue
) into discardable
waste
(
tailings
).
