(19)

(11)

EP 2 640 861 A1

(12)

(43) Date of publication: 25.09.2013 Bulletin 2013/39 (21) Application number: 11841689.0 (22) Date of filing: 18.11.2011

(51) International Patent Classification (IPC):  C22B 3/00(2006.01) C22B 3/04(2006.01) C22B 3/06(2006.01) C22B 23/00(2006.01) (86) International application number: PCT/AU2011/001487 (87) International publication number: WO 2012/065222 (24.05.2012 Gazette 2012/21)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 19.11.2010 AU 2010905134 (71) Applicant: Murrin Murrin Operations Pty Ltd Perth, WA 6000 (AU)	(72) Inventors: KEATING, Ross Subiaco Western Australia 6008 (AU) HELM, Daniel Singleton Heights New South Wales 2330 (AU) (74) Representative: Thomson, Craig Richard  Murgitroyd & Company Scotland House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)