Word: tunnelled
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Dates: during 1990-1999
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...this problem of excessive heat does not come into play for most of the tunnel system because heavy insulation minimizes the heat entering the tunnels, Hawkes says...
Hawkes says the University has three miles of pipes running through the tunnel system, and another three miles of direct buried pipes...
...tunnel system is more than half a century old. Most of the sections were built between 1927 and 1933, although the first section was built even years before, in 1914, according to documents in the University's archives...
Hawkes demonstrated delamination by pulling a loose piece of concrete off the tunnel wall, loosing a cloud of dust...
This summer, workers jackhammered through a large section of the roof of the tunnel under Memorial Drive and fixed up the walls with steel reinforcing. They also poured new concrete for the roof, Hawkes says...