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  1. 1
    Published 1996
    Subjects “...Tunneling Safety measures....”
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    Safety of New Austrian Tunnelling Method (NATM) tunnels : a review of sprayed concrete lined tunnels with particular reference to London clay.
  2. 2
    Published 2000
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    The collapse of NATM tunnels at Heathrow Airport : a report on the investigation by the Health and Safety Executive into the collapse of New Austrian Tunnelling Method (NATM) tunnels at the Central Terminal Area of Heathrow Airport on 20/21 October 1994.

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