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Found on
http://en.wikipedia.org/wiki/New_Austrian_Tunnelling_Method
The New Austrian Tunnelling method (NATM), also known as Sequential Excavation Method (SEM), describes a popular method of modern tunnel design and construction. This technique first gained attention in the 1960s based on the work of Ladislaus von Rabcewicz, Leopold Müller and Franz Pacher between 1957 and 1965 in Austria. The name NATM was inten...
Found on
http://en.wikipedia.org/wiki/New_Austrian_Tunnelling_method
No exact match found.
