Individuals who operate mechanical boom and cable or tower and cable equipment to lift and move materials, machinery or other heavy objects. They extend or retract a horizontally mounted boom to lower or raise a hook attached to the loadline. Most operators coordinate their maneuvers in response to hand signals and radioed instructions. Operators position the loads from the on-board console or from a remote console at the site. While crane and tower operators are noticeable at office building and other construction sites, the largest group works in primary metal, metal fabrication and transportation equipment manufacturing industries that use heavy, bulky materials.
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