Dywidag-Systems International Pty Limited

Andrew Boychuk

Mieczyslaw Rataj

A rock bolt () comprises a tubular body () defining a tubular bore () for receiving an adhesive or cement filled cartridge (). A plug () is mounted in the bore (). The plug () is displaceable along the bore () and sealingly engages the tubular body (). A bolt head () is located at or adjacent a second end () of the rock bolt (). A detent arrangement () restrains the plug () in a position adjacent an opening at the first end () of the rock bolt ().

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Cardiff, Australia

Andrew Boychuk