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New Austrian Tunneling Method (NATM)
https://railsystem.net/natm/
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Tagged with:
construction
drilling
excavation
austrian
blasting
face grouting
face support
invert
The New Austrian Tunneling method (NATM) was developed between 1957 and 1965 in Austria. It was given its name in Salzburg in 1962 to distinguish it from old Austrian tunnelling … Continue reading →
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