Crush and Run The cost each cubic yard is around $20, while the cost per ton is approximately $28. This material, also known as crusher run, quarry process, dense grade aggregate, or road stone, is made up of crushed rock and dust. The density of this material is used when designing roads or parking lots, so that vehicles can be placed with enough clearance between them. The quality of the rock makes no difference when using it for these purposes; it can be granite or shale. The density of crush-and-run material is usually less than 2.5 tons/cu yd, but it can go as high as 3.5 tons/cu yd. Most often it's in the 1.8 to 2.4 ton range. It's worth noting that heavier material is cheaper per ton than lighter material, so if you can afford it then go ahead and add some weight to your load! This type of rock is used mainly for road construction, but it can be found anywhere rock is required for its physical properties. For example, crush-and-run material makes good roofing material because of its tight packing of rocks which prevents water from entering the void between them. This in turn keeps buildings dry. It's important to use a licensed and insured contractor when loading or unloading your vehicle.