Eurostat, Luxembourg. 29012311 (01/1995-12/2003) But-1-ene and but-2-ene for use as a power or heating fuels: CN 29012311 /Exports /Unit = Values in 1000 Euro /Partner: Austria /Reporter: European Union /29012311:But-1-ene and But-2-ene for use as a Power or Heating Fuels.