Pelican -
What saws do you use the 10" blades with? I was looking into those myself, actually.
As for recycling, I can't say that I do. I thought I remembered one of my suppliers saying they'd do it, but it was quite a while ago and I never followed up.
One use I discovered from some of the nice folks here is a use for the blades after the diamond segments are gone - use the blade as a sod cutter. Mark lot lines with string or chalk, and buzz the line with the old blade on a saw. Don't have to be concerned about rocks damaging the blade - it's already gone.
Save some of the pain in the neck work associated with laying sod.
