Stockman Scott's Political Debate Porch Message Board

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Politics : Stockman Scott's Political Debate Porch

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To: surfbaron who wrote (3530)	7/30/2002 8:52:24 PM
From: Sully-	of 89467

Apparently huge underground construction projects with a high water table has been done for several decades now........... In July, 1967, work began on the Market Street subway and stations 80-100 feet below heavy downtown traffic. Against the combined pressure of mud and bay water, the work required one of the greatest concentrations of tunneling crews and equipment in construction history. Construction of the giant five-story-high stations beneath Market Street and the tunnels themselves, was accomplished under extremely difficult conditions imposed by the high water table in downtown San Francisco, plus an incredible maze of underground utilities installed over the last 100 years. The first tunneling in the western U.S. done entirely under compressed air conditions, the project produced a succession of "firsts" in constructing the subway and stations in a difficult mud and water environment. bart.gov uchicago.edu Subject: UNDERGROUND FACILITIES IN IRAQ fas.org Iraq: Defector Helped Build WMD Facilities nti.org fas.org

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