The rumour mill can have a damaging effect on the efforts of local authorities and other bodies seeking to regenerate an area and encourage new investment.
That would have enabled him to pre-empt the rumour mill and give an authoritative account of the position.
We learn them already from the grapevine and the rumour mill.
We need to fill the vacuum to ensure that the rumour mill is displaced.
It is possible of course that contrary to outward appearances, the rumour mill of accusations ground inexorably on.