The execution of such a complex task of constructing F80 poles per 1,20m fixed on the casings of the TB tunnels, which is also reflected in the second draft of the CR (Phase D activity lasting 40 days), at a limited height and space using a specialised penetrating machine, very low availability in Greece, it is considered to have been over-optimistic. The height limitation requires a procedure for the gradual addition of parts to the machinery in question for both drilling/excavation and the installation of weapons.<br>
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