A rock quarry unit is a type of mining operation that involves cutting or blasting solid rock from the ground in order to create slabs. The slabs are then used for construction purposes, such as building roads, bridges, and other structures. The process of cutting and blasting the rock is done by specialized machinery and requires a great deal of skill and precision. The resulting slabs are then transported to their intended destination. The term 'SLAB' is used to refer to the large pieces of rock that have been cut or blasted from the quarry.