On 24/09/17 18:14, MichaelDavid70 wrote:
replying to NickW, MichaelDavid70 wrote:
According to OFTEC it should be 40mm compacted sand in bottom 40mm
compacted
sand over the top and warning tape 150mmÂ* below surface


posted on July 8, 2003????



--
"The great thing about Glasgow is that if there's a nuclear attack it'll
look exactly the same afterwards."

Billy Connolly