On Aug 17, 7:59*pm, robgraham wrote:
On 17 Aug, 18:45, Geo wrote:

On Sun, 17 Aug 2008 18:15:06 +0100, The Natural Philosopher wrote:

..isn't that the soft ****e you cut with a saw?

That's the fella

I daresay you could do it with all sorts of things and cross your
fingers, but for a retaining wal I'd definitely be using dense blocks,
not aerated. A collapsing retaining wall can be dangerous.


NT