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COMPAÑÍÑÍA A MINERA CERRO NEGRO S.A.RELACION COSTO OXIDOS - MAQUILA ENAMI120120000100100000Costo Oxidos (CUS$/lb)806040800006000040000Maquila ENAMI (ton)202000001998 1999 2000 2001 2002 2003 2004 2005AÑO0CostoMaquila ENAMI
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