The International Society for Trenchless Technology

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1987

- Winner: Sanwa Kizai Co Ltd
- Commended: Gas Research Institute; Maurer Engineering & Allied Steel Tractor Prods
- Commended: Subterra


Category Name or Company CountryReason for Award
WinnerSanwa Kizai Co LtdJapanFor the Enviliner Microtunnelling Machine
CommendedGas Research Institute; Maurer Engineering & Allied Steel Tractor ProdsUSAFor the Guided Horizontal Piercing Tool
CommendedSubterraUKFor the Rolldown Pipe Insertion System

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