§ Mr. Campbell-Savoursasked the Secretary of State for the Environment whether he has made any assessment of the comparative cost and efficiency of sewer replacement by the technique of pipejacking.
§ Mr. Giles ShawThe pipe jacking system is in general use in the water industry in competition with other methods of installing sewers and underground conduits. Its cost and efficiency are dependent on local site circumstances and ground conditions and there are no central records of relative cost assessments.