Well, we were buying soil from one place and they told me 1.4 tons = 1 yard screened topsoil. So we had 15 tons delivered, thinking that would equal almost 10 yards. What they delivered was about that, from the looks of the load the delivered. But then I went to another rock / soil supply yard this afternoon and the guy I asked there said, decisively, 1.25 tons = 1 yard. So that means 15 yards would equal about 12 yards. Either way, I guess I figured out what I needed. Thanks guys.