A professional who tends mixing machine that blends asbestos fibers and ingredients, such as ground marble, water, cement, and oil to form compounds used in making asbestos products, such as pipe, shingles, and brake linings. Respnsibilities include:

• Dumps or pours ingredients into mixer in specified proportions.
• Starts mixer and allows ingredients to mix for specified time.
• Stops mixer and moves control or turns valve to dump or transfer mixture into storage container.
• Flushes water through mixer to clean mixing equipment.
• Records production data.