John Mahana of H&H Co. uses a forward-reverse joystick to retract the dual hydraulic rams on the UB-40 tunneling machine, as the hand of Jim Voudy prepares to lower another 3-foot-long hollow pilot tube.
For years, a storm sewer in Holiday Lake Estates in Morgan Hill, Calif., backed up, flooding a road and the driveway at the end of it. Discharge from the outfall into Anderson Reservoir eroded the steep bank of the homeowner’s lakeside property, placing the yard and house in...
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