STRAIGHT FORWARD DRILLING WATeR-pOWeReD DRILLING TO THe ReScue OF cApSIzeD cOSTA cONcORDIA The salvage of the cruise liner Costa Concordia is estimated to cost €200 million. An important part of the work is to secure the wreck, keeping it from sliding further down the slope it lies on. A vital part is played by the Wassara DTH hammer when drilling for the anchoring foundations. The water-powered percussion drilling is the only feasible met

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