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 ...
Roadheaders are pivotal machines in underground excavation, combining mechanical cutting heads with hydraulic or electro-hydraulic drives to excavate rock and coal. Performance prediction and control ...
A made-in-China roadheader with an excavation diameter of 5.63 meters recently came off the production line in Changsha, Central China’s Hunan Province. This equipment will be used in the construction ...
The Sandvik MT520 is a new roadheader in the 91-t class, built for increased productivity and safety. The machine has easily exchangeable modules, which form the basis for cost-effective excavation in ...
Sandvik Mining and Construction has launched a new class of roadheader for tunnelling in medium to hard rock. Sandvik says the modular design of the MT520 means it can be adapted to a range of ...
NDCO Construction Services has just sold a third Roadheader to Sochi, Russia . The machine has just been delivered onsite where it will be used constructing tunnels for the 2014 Winter Olympics. The ...
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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