Posiva, the Finnish waste management company, said today it has started construction of a heavy plug for the demonstration repository tunnel at its final repository and waste encapsulation plant at ...

A leak in the Queens-Midtown Tunnel and the race to plug it revealed the fragility of New York City’s aging transportation network. By Patrick McGeehan Titus Ogilvie-Laing was driving through the ...

With a few dull thuds, the 1-ton bag of high-strength fabric tumbled from the wall of the mock subway tunnel and onto the floor. Then it began to grow. As air flowed into it through a hose, the bundle ...