(19)

(11)

EP 1 629 178 A1

(12)

(43) Date of publication: 01.03.2006 Bulletin 2006/09 (21) Application number: 04735851.0 (22) Date of filing: 03.06.2004

(51) International Patent Classification (IPC):  E21D 21/00(1968.09) E21D 20/02(1968.09) (86) International application number: PCT/AU2004/000736 (87) International publication number: WO 2004/106700 (09.12.2004 Gazette 2004/50)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 03.06.2003 AU 2003902774 16.02.2004 AU 2004900773 (71) Applicant: Dunefire Pty Ltd. Mt Kembla, New South Wales 2526 (AU)	(72) Inventor: SEEDSMAN, Ross Mt Kembla, New South Wales 2526 (AU) (74) Representative: Taquist, Henrik Lennart Emanuel  Sandvik Intellectual Property HB 811 81 Sandviken 811 81 Sandviken (SE)