A professional who repairs worn and damaged equipment and tools used by workers engaged in electrolytic refining of copper. Respnsibilities include:

• Examines rubber boots and gloves and fills them with water to detect holes.
• Mends holes with rubber patches.
• Mends leaky metal buckets by soldering holes.
• Grinds dull tools, such as picks, shovels, and scoops, using electrically powered emery wheel.
• Replaces handles, hose, and other defective parts of tools and equipment.
• Issues new or repaired replacements.