Crushed Stone Description and Uses (Pennsylvania locations)
Under concrete slabs and sidewalks, utility pipe bedding, precast concrete production, asphalt mixes AASHTO #7 x 1/4" 3/4" Oil and chip road surfacing, pipe bedding, asphalt mixes AASHTO #8 x 1/4" 1/2" Driveway topdressing, oil and chip road surfacing, utility pipe bedding, fuel and water tank bedding, under precast and Superior® walls ...