Sludge and earth pressure balance machines use different techniques for compensation of pressure to the outside and the cartier inside face of the machine. County officials said Jay Dee impressed with the work of the West End of the Tunnel.
And Gunars Sreibers, County Brightwater project manager said that Jay Dee has worked with the manufacturer of machines to retrofit high pressure machine in Lake Forest Park segment of the tunnel. Hauser said he is trying to avoid arrest and maintenance of high pressure points, such as Vinci did, but is willing to do so if necessary.
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