The crushed stone
It is also known as angular rock. These types of stones are formed from building aggregates. Generally it is produced by the mining industry. The rock is removed to the desired size, with crushers. It is distinct from gravel that is produced by natural processes of weathering and erosion and has a more rounded shape. The crushed stone is one of the key materials for the construction of roads although it is also used for railroad ballast, garden ornament and as a composite material of concrete and asphalt.
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