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Papers fra det store udland 
SOIL RELATED RISKS FOR HORIZONTAL DIRECTIONAL DRILLING IN 
LATEST DEVELOPMENTS IN MICROTUNNELLING. 
MULTI-SENSOR 3-D MAPPING OF DRILL-HEAD POSITION AND ITS 
THE SECRETS TO SUCCESSFUL 
GUIDANCE ON DESIGN OF FLEXIBLE LINERS TO REPAIR 
INSTALLATION OF A LARGE DIAMETER PIPE BY HORIZONTAL