Final answer:
None of the provided options - a spanner, rabbet, pivot, or kelly - is a hand-powered hydraulic spreader. A hydraulic spreader is typically used in emergency rescue situations.
Step-by-step explanation:
The tool that is a hand-powered hydraulic spreader is not provided on the list of options given in the question. A hand-powered hydraulic spreader is often used in emergency rescue operations to pry apart wreckage. This tool uses hydraulic force to create a spreading action powerful enough to dislodge heavy objects. None of the options you've mentioned, a spanner, a rabbet, a pivot, or a kelly, are hydraulic spreaders.
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