All of our crushed stone products come from the same quarry which is located near our sales yard. The material is a granitic "gneiss", is mostly gray with some green and black in color, and is the hardest of its type in the upstate of SC. The SCDOT usually uses ASTM/AASHTO specifications and names. We sell an "offgrade" crusher run called "Fill Material" which is made from anything we wish to crush like "sap" rock and concrete. Each product is described in detail here. Its top size is approximately 1.25" and its bottom size is approximately 0.375" material with a uniform gradation of sizes between the two ends of the specifications.