A professional who weighs and crushes zinc ore and other materials, using platform scale, crusher, and handtools. Respnsibilities include:

• Signals overhead crane operator to lower loaded bucket of zinc ore onto platform scale.
• Balances scale beam.
• Records weight of materials and signals overhead crane operator to dump them into crusher.
• Starts vibrating screens that crush ore and separate it according to size.
• Shovels unscreened ore back into crusher.
• Scoops samples of ore from conveyor belt for laboratory analysis.
• Opens bin gate to fill bucket with sintered ore.
• Levels ore in bucket, using bar and shovel.
• Signals overhead crane operator to remove filled bucket and to replace it with empty one.
• Moves empty or filled buckets on cars about yard and plant, using power-driven winch.