Eurostat, Luxembourg. 81129239 (01/2002-12/2006) Niobium `columbium` and rhenium waste and scrap (excl. ash and residues containing these metals): CN 81129239 /Exports /Unit = Quantities in tons /Partner: Poland /Reporter: European Union /81129239:Niobium `columbium` and Rhenium Waste and Scrap (Excl. ash and Residues Containing These Metals).