
McDermott recently took delivery of nine new Wacker Neuson machines from local dealer Beddoes Machinery Sales of Montgomery for this 24 week contract. The order comprised five mini excavators, a 28Z3, 38Z3, 50Z3 and a pair of 2404s, plus a 6503 and three 9503 wheeled machines with triple booms used for placing stone and backfilling duties. Of the minis, three are equipped with VDS, which allows the operator to tilt the machine's entire superstructure by up to 15º. This feature is important at the M6 project as a lot of the digging has to be carried out on sloping embankments.
Where the embankment is steeper, the machines only have to dig a minimum amount of material away in order to accommodate the up-hill track and then deploy the VDS to level the cab. In the even steeper sections and where access by even a mini is impossible, the company has to resort to a purpose-built trenching attachment.