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Injection umbrella system
Injection umbrella system for simultaneous drilling and expansion process in two types: pilot lace umbrella system and lost lace umbrella system.
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Tunnelling and geotechnics
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Injection umbrella system for simultaneous drilling and expansion process in two types: pilot lace umbrella system and lost lace umbrella system.
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We know the drill.
Almost 50 years of experience mainly in the production of mining tools for coal mines, non-ferrous metal ore mines and quarries puts Gonar in a high position among companies with a similar business profile.