Crushed Stone Processing
11.19.2 crushed stone processing 220.127.116.11 process description major rock types processed by the rock and crushed stone industry include limestone, granite, dolomite, traprock, sandstone, quartz, and quartzite. minor types include calcareous marl, marble, shell, and slate. industry classifications vary considerably and, in many cases, do not inch crushed stone mainly used to prevent erosion on roadsides and in drainage ditches, also often laid at the entrance to long-term construction projects. quarry process quarry process, also known as qp, dense grade aggregate crusher run and road stone, is a combination of small, 34-inch-or-less crushed stone and stone dust.