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Up to 39.7 lbs (18 kg): One person.
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39.7 lbs (18 kg) to 70.5 lbs (32 kg): Two or more people.
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70.5 lbs (32 kg) to 121.2 lbs (55 kg): Three or more people.
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Above 121.2 lbs (55 kg): Material handling systems (such as levers, slings, lifts and so on) must be used.
When this is not practical, specially trained persons or systems must be used (riggers or movers).
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