A professional who tends generating equipment that processes calcium-carbide crystals and water into acetylene gas. Respnsibilities include:

• Turns valves, level gauge, and thermostat to raise and heat water to prescribed level and temperature in generator.
• Dumps specified quantity of calcium-carbide crystals into hopper, bolts in cover, and starts generator.
• Opens hopper gate and starts vibrator that sifts crystals into generator.
• Records amount of time consumed during operation and cylinder shipping data.
• May tend compressor.
• May ascertain level of acidity or alkalinity of gas with litmus paper, and test filled cylinders for leaks by brushing on chemical solution.
• May fill cylinders with compressed gas.