In article , Joe Jamies
writes

My idea is to get a truck-load of the sawmill "waste" and a truck-load
of cow manure, create a big pile by adding thin layers of the 2
materials, cover the pile with nylon and wait one year and hope for
the best!

I think you should be a bit careful about this stuff.
Wood these days has been treated with all sorts of chemicals
(pesticides, fungicides etc etc) which will be bound to be in the saw
dust as well.
--
Jane Ransom in Lancaster.
I won't respond to private emails that are on topic for urg
but if you need to email me for any other reason,
put jandg dot demon dot co dot uk where you see deadspam.com