On 18/04/2021 21:22, charles wrote:
In ,
Tim wrote:
Huh! I remember getting 5 cycle punctures in one week after a lane I
used on my way to school was re-surfaced with bitumen and crushed stone
chippings. '58/'59 or so. Common here for little used lanes to have a
grass strip down the middle.
Thats's what I called "Three ply" earlier in the thread.

Oh. I assumed you meant tarmac that had been allowed to grass over, then
a new layer on top!

I've seen lanes like that, and often there is tarmac under the grass.

Andy