A quarry is a site in which a variety of raw materials are extracted from the earth. The materials extracted include limestone, granite, marble and sand. The equipment and machinery used in quarrying are Screens, crushers, shredders and rock drills. We provide all the leading manufacturers such as Extec, Tesab, Fintec, Brown Lennox, Pegson, Powerscreen and Terex-Finlay. We will match your ... Used Crushers for Sale. Reducing the size of rocks and stones is an essential process in industries such as quarry and aggregates, construction, mining and material recycling. Cat Used is your one-stop repository for rugged, dependable used rock crushers for sale that will increase productivity and efficiency at your job sites.