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مشاهدة النسخة كاملة : Gotthard base tunnel ready for testing



BECKHAM
25-08-2015, 03:49 PM
Testing of the new Gotthard base tunnel, set to become the world’s longest tunnel when it opens next year, will start in October, the construction firm has confirmed.

for more... (http://www.thelocal.ch/20150825/gotthard-base-tunnel-ready-for-testing)