[quote="perhaps all those concerned with Silbury's future could be invited to offer a handful of chalk to the infill.[/quote]
If we put to EH that more might join in I fear we might scupper any chance if indeed there is one for the children.
I suggest matters are kept simple and if this basic idea is OK with others, and we certainly need to know if scousemaiden and her family think this is an acceptable idea, then the basic suggestion allows EH to see how it could work and what might be allowed to happen.