density of top soil

Hi, I am going to have to order materials for projects my husband is starting. I learned from other things I read on this site how to calculate amount of tons and yards I need from knowing square footage and depth. However, not knowing densities, I cant calculate this stuff. I need the densities of top soil, concrete, sand, gravel, qp, and stone dust. It doesnt have to be exact, just aproximations. It would help a lot!

[Robert Fogt]

I found a list of many substances here:
http://www.reade.com/Particle_Briefings/spec_gra2.html

For topsoil, look under Earth. For the others just search under their name.

If you pick the substances there that come closest to what you are looking for, I can help you create the conversion from that.