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EP0397629A2
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Rock working tool
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EP0397627A1
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Tunnel boring machine
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EP0389454A1
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Device in impact machines
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SE8903895D0
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Stabilisation method for rock formation - involves soft steel pipe anchored in bore hole and cable inserted through pipe to hole bottom
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SE8900590D0
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Arrangement with striker machine - comprises drill crown with length less than 80 per cent of that of striker piston
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SE8900589D0
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Striker machine appts. - comprises drill crown whose shaft has wash channel with axial extension only
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US3563324A
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Machine for cutting rock
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US3523426A
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Process and apparatus for driving tunnels in rock having zones differing in stability
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YU57867A
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Uredaj za regulisanje masina glodalica za busenje tunela sa rotirajucim nosacem glave glodaca
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CA818723A
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Cutter-speed and feed-rate regulator for tunnel excavators
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CA881829A
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Process and apparatus for the construction of tunnels or the like in rock having zones differing in stability
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CA841473A
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Tunnel driving system
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CA843280A
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Machine for driving tunnels
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CA888047A
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Machine for cutting rock
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CA842075A
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Tunnel driving machine
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