Usually fitted with ropes or chains to raise and lower materials, what is this heavy-duty monster?

Looking a bit like the bird it's named after, a crane uses chains, ropes, and sheaves not only to raise and lower heavy materials but to move them from point A to point B. With superhuman strength, cranes are frequently seen in construction, manufacturing, and transport, and are used to load and unload freight, transport materials, and assemble equipment.

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