(19)

(11)

EP 2 326 737 A1

(12)

(43) Date of publication: 01.06.2011 Bulletin 2011/22 (21) Application number: 09813904.1 (22) Date of filing: 18.09.2009

(51) International Patent Classification (IPC):  C22B 3/04(2006.01) C22B 23/00(2006.01) C22B 3/08(2006.01) (86) International application number: PCT/AU2009/001245 (87) International publication number: WO 2010/031137 (25.03.2010 Gazette 2010/12)

(84) Designated Contracting States: 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 SE SI SK SM TR Designated Extension States: AL BA RS (30) Priority: 19.09.2008 AU 2008904868 (71) Applicant: Murrin Murrin Operations Pty Ltd Perth, WA 6000 (AU)	(72) Inventor: O'CALLAGHAN, John Perth, Western Australia 6000 (AU) (74) Representative: Thomson, Craig Richard  Murgitroyd & Company Scotland House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)