IC2 experimental introduced stone dust as a byproduct of the ore washing plant and the themal centrifuge. My suggestion is very tiny: allow us to use stone dust to craft sand or cobblestone because these plants generates a ton of this dust, and no way to use it other than CF Powder.
My motivation is very simple: sometimes I spawn quite far from deserts, and some mods requires a ton of sand (mainly to burn it to glass). I always have to go to a long boring journey - just for sand?
And other aspect: I do not use as much CF powder as I can craft from this dozen stone dust. And I cannot use this to any other thing... too bad.