The views expressed in this book are the author’s own but he Q n;,OB k
acknowledges his debt to his many immediate colleagues in Halcrow and to N7^sn!JB
so many tunnellers and others around the world for several of the thoughts \ AB)L{
which have prompted the book. The author accepts full responsibility for ]UGk"s5A
any misunderstanding. The account may be criticised as unduly orientated 9vCCE[9
towards the British and European examples. This is justified by selecting RxVZn""
examples for which the circumstances are generally familiar; lessons learned 8KsPAK_
may well have more universal application. The Channel Tunnel, for YU\k D
example, provides many examples of meritorious engineering with less E9'
2_e
meritorious management. An exemplary account of its engineering geology gN]\#s@[
(Harris et al. 1996) attracts numerous references on account of its depth and 4v9d&
m!<
breadth.
