Crushed stone can be composed of limestone, granite, trap rock or any other hard, durable rock. The final product is produced by blasting and crushing the stone and then screening it to a specified size at the site in stationary or portable plants.
Lehigh Hanson quarries supply crushed stone for use as a construction aggregate, primarily in highway and road construction as base material and for the production of concrete and asphalt. Crushed stone is also used to make portland cement and lime. Other uses include riprap, railroad ballast, filter stone and agricultural limestone.