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The most suitable soil for compressed air tunneling is a) silt b) sand c) clay d) gravel

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Question added by Mohamed Galal Hussein Ahmed Mohamed , Technical Mnager , Fast Building Contracting Co.
Date Posted: 2015/02/25
Amgad mutasium Eisa
by Amgad mutasium Eisa , Site Engineer , Lamizone

>>>>The answer is : c) clay

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