But the point of the HA email is to get them to explain why they've chosen tunnelling when what they HAVE published suggests that tunnelling is more damaging, more risky and more expensive.
If they've got proper reasons to do with the safety of the hill rather than just choosing the option that allows more research, HA will be DELIGHTED!!!!!!
And even if the reasons AREN'T to do with the safety of the hill and ARE for the option that allows more research, at least they will have disclosed that to the public - the owners of the Hill - so the public (& HA) can complain if they want to.
love
Moth