Coquille casting workers manufacture castings, including pipes, tubes, hollow profiles and other products of the first processing of steel, by operating hand-controlled equipment in a foundry. They conduct the flow of molten ferrous and non-ferrous metals into coquilles, taking care to create the exact right circumstances to obtain the highest quality metal. They observe the flow of metal to identify faults. In case of a fault, they notify the authorised personnel and participate in the removal of the fault.