Crushed Stone Fractions
Crushed rock industry is a major contributor to and an indicator of the economic well being of the nation. Forms Of Crushed Rock About three-quarters of the crushed stone production is limestone and dolomite, followed by, in descending order of tonnage granite, traprock, sandstone and quartzite,.
Crushed stone is produced by crushing quarry rock, boul-ders, cobbles, or large-size gravel. Crushed air-cooled blast-furnace slag is also used as fine or coarse aggregate. The aggregates are usually washed and graded at the pit or plant. Some variation in the type, quality, cleanli-ness, grading, moisture content, and other properties is expected.