imestone, as used by the minerals industry, is any rock composed . mostly of calcium carbonate (CaCO. 3). Although limestone is common in many parts of the United States, it is critically absent from some. Limestone is used to produce Portland cement, as aggregate in concrete and asphalt, and in an enormous array of other products, making it a ... Crushed stone is a product of rocks being broken down using a crushing machine. Crushed stone is sourcedalso known as quarriedfrom a parent rock. The most common parent rocks used for crushed stone are Limestone. Limestone is the most common rock type used to make crushed stone in North America due to its wide availability and versatility. Limestone Quarry Plant. The first step in quarrying is to gain access to the limestone deposit. This is achieved by removing the layer of earth, vegetation, and rock unsuitable for productcollectively referred to as overburdenwith heavy equipment that is sometimes coupled with small explosive charges.Our limestone quarry plant mainly include limestone crusher plant and limestone