Crushed Stone Vs Crushed Gravel: What’s The Difference
Crushed Stone Products Our stone quarry operations manufacture limestone products and operate year round. These quality aggregates are used in numerous applications such as ready mix concrete, asphalt production, precast operations, road construction, commercial construction, residential construction and agricultural products. 1 Stone Also referred to as PA 4 ballast. This aggregate is.Because crushed stone can be made from nearly any type of hard stone, it is a highly sustainable resource. The most common types of rock used are limestone, argillite, washed gravel, granite, traprock and quartzite. Union Quarries uses limestone to produce AASHTO 10 and other grades of crushed stone, as this material is abundant in Pennsylvania.