(19)

(11)

EP 0 261 119 A1

(12)

(43) Date of publication: 30.03.1988 Bulletin 1988/13 (21) Application number: 86903480.0 (22) Date of filing: 27.05.1986

(51) International Patent Classification (IPC):  B21D 28/ 00( . ) B26F 3/ 04( . ) F42B 1/ 02( . ) B26F 3/ 00( . ) F42B 1/ 00( . ) F42D 3/ 00( . ) (86) International application number: PCT/GB1986/000292 (87) International publication number: WO 1986/007000 (04.12.1986 Gazette 1986/26)

(84) Designated Contracting States: AT BE DE FR GB IT LU NL SE (30) Priority: 28.05.1985 GB 19850013325 (71) Applicant: EXPLOSIVE DEVELOPMENTS LIMITED Melbourne, York YO4 4NF (GB)	(72) Inventors: ALFORD, Sidney, Christopher Wiltshire SN13 OHX (GB) SHANN, Peter, Christian Fulford, York Y01 4PL (GB) (74) Representative: Oulton, Richard John  R.J. OULTON & CO., First Floor, Pearl Assurance Buildings, Land of Green Ginger Hull, Humberside HU1 2EA Hull, Humberside HU1 2EA (GB)