Which of the following is not one of the four basic steps to establish a Type C supplied air system?

The process of establishing a Type C supplied air system involves four essential steps: compression, storage, distribution, and final delivery to the user. Compression is critical as it increases the air pressure, allowing for efficient transportation and storage. Storage refers to the holding of compressed air in tanks, ensuring that there is a sufficient supply available for use. Distribution involves the pathways and systems that deliver the compressed air to the respirators worn by workers.

Manufacturing, while an important aspect of producing equipment and components, is not considered one of the essential steps in setting up a Type C supplied air system. This step does not directly relate to the functioning or operation of the air system itself in terms of supply, indicating that it does not fit within the four fundamental stages required for establishing this type of system. Therefore, recognizing the correct steps is crucial for understanding how to safely implement a Type C supplied air system in environments where asbestos exposure might occur.