Case Study Selby Rail and River Crossing Project Name: Selby Rail and River Crossing Location: River Ouse, Selby, North Yorkshire, UK Project Summary: Length: 300m Depth: -18.5m Ground conditions: Clay, Sand and Sandstone Rock Product pipe: 4 way 180mm PE SDR-11 Drilling assembly: 6 5/8” GST (Gyro Steering tool) 6 ¾” 7-8 Lobe 3 stage downhole mud motor and 9.7/8” MT Drill bit Project Details: Drilling Contractor AMS No Dig fr

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