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Erzaufbereitung f =
chem.	ore dressing
econ.	ore processing
met.	ore benefication
mining.	beneficiation; concentrating plant; concentrator; millsite; mineral dressing; mineral processing; ore concentration; ore preparation; ore separation; preparation of ore; reduction plant (Anlage); shaking

Erzaufbereitung: 4 phrases in 4 subjects

Coal	1
Information technology	1
Metallurgy	1
Mining	1