Wetland excavation requires "trenchless technology"

09/21/2009 | Daily Commercial News

Workers in Cambridge, Ontario, are using hand shovels to excavate a section of a new sewer line to be located in a wetland area. The contractor decided on using hand shovels after regulators raised concerns about open cut excavation. "The trenchless technology is similar to the methods used in mining which means -- that rather than open cutting the area -- the majority of the route can be excavated or tunneled underground," noted Jim Kirchin, the city's director of planning operations.

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