A professional who operates rotary type machine to mix concrete and fills metal molds to make pipe and other concrete products. Respnsibilities include:

• Pulls trip bar and lever on overhead chutes to fill suspended weighing hoppers and cart with specified weights of sand, gravel, and cement.
• Pushes cart of cement to mixing machine and tilts cart by hand to dump cement into machine.
• Turns valve to admit specified quantity of water.
• Fills mold with sample batch of concrete.
• Lifts mold from sample and compares diameter of sample with diameter of mold to determine whether consistency of concrete conforms with specifications.
• Adjusts mixture by adding water, cement, sand, or gravel.
• Bolts pneumatic vibrator to mold, using hand wrench.
• Pulls lever to open mixer chute and fill pouring bucket.
• Positions bucket over mold, using overhead hoist and pulls trip bar to fill mold.
• Starts vibrator to settle concrete.
• Pushes concrete remaining on core cover into mold, using hoe.
• Levels off top of fresh casting, using trowel.
• Records each batch of concrete produced.