ORINDA — A giant digging machine this week carved the first few feet of earth and dirt out of the hills for the Caldecott Tunnel’s fourth bore, a $420 million project to reduce congestion on Highway ...
A video posted on YouTube captures the moment when a roadheader, an enormous tracked tunneling machine, breaks through a wall of rock and earth and workers step through to greet their fellow miners on ...
World Construction Network on MSN
Sydney Metro West reaches tunnelling milestone with new LEM
Sydney Metro West has recorded a milestone in tunnel construction, using a Lining Erector Machine (LEM) to line the mined ...
ORINDA — A giant digging machine this week carved the first few feet of earth and dirt out of the hills for the Caldecott Tunnel’s fourth bore, a $420 million project to reduce congestion on Highway ...
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