Applies to establishments engaged in the mixing and delivery of ready mix concrete for all types of residential and commercial projects such as, but not limited to, foundations, walls, slabs, roadways, driveways, walkways, dams, bridges and swimming pools. Usually, these establishments operate a plant location with a supply of sand, gravel, pebbles, broken stones or slag, and various ingredients to produce bonding adhesives such as cement. The concrete is premixed at the plant location and loaded into a delivery truck, or the raw unmixed ingredients such as cement, sand, gravel, pebbles, broken stones and water are loaded into a concrete truck and mixed in a revolving or rotating drum in transit to the project site. The concrete is discharged from the drum with use of a metal chute or is transferred into the bed of a concrete pump truck for pumping. This classification includes ready mix dealers who operate concrete ready mix trucks and/or concrete pump trucks as part of the delivery service. This classification also includes the related sale of tools, equipment, and building materials such as bricks or concrete blocks. This classification also includes pit and crusher operations provided all sand and gravel produced is used by the dealer to manufacture concrete mix.

This classification excludes establishments engaged in the commercial production and/or digging of sand, gravel or stone not in connection with a ready mix dealer which is to be reported separately in classification 0112, and concrete pump truck services not in connection with a ready mix dealer which is to be reported separately in classification 3506.