Dude, BTDT and regretted it.
Busting up concrete with cement in it (O) (that's my sign for anal)
is a beotch unless it's only a little bit. If it's more that a third yard or so, it's too much IMO.
Last time I did it I decided never again, I'll pay someone with a bob-cat and some helpers to do it. It just wasn't worth it. If I were broke I might do it but as long as I have money I'll never break up concrete (with cement in it) again.
Did anyone mention that concrete has cement in it yet?