Silbury Hill 180
Image by notjamesbond
Silbury Hill

Silbury Round One

Hi, sbp,
>With either method what you could not ensure was that all the voids would be filled.<

Agreed, but surely a significant reduction in the size of the voids will lead to a significant reduction in void migration, due to the void volume being lessened; no major falls would be possible, because they would have height to fall from?

Peace

Pilgrim

X

last line should be:

"......because they would <b>not</b> have height to fall from?"

Pilgrim

X