On Thu, 16 Jan 2014 13:55:39 +0000, Broadback
wrote:

I have has a dead large tree removed, the grinder came this morning and
ground it out. Now I need to get rid of all the grindings. I intend
putting it on a large compost heap, which already contains grass
cuttings and weeds. How long can I expect it to take for them to become
usable as mulching/compost? It is a large heap about a cubic meter.

Don't just put it *on* the compost heap or it will congeal into a
lump. You need to mix it in well with the softer stuff like grass.
That's particularly important if the wood is hard.
And apply plenty of accelerator - recycled beer is ideal.