Norman S. Thomas

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Device for joining two members together

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining
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Tunnel lining

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Tunnel lining, segment therefore and method of lining a tunnel

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining
Patent

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Tunnel linings

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining
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Profile ID: LFUS-PAI-P-1094367

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