A vertical transport apparatus includes a housing, a motor supported by the housing, a first drum, a second drum, and a tensioning control assembly. The first and second drums are operatively coupled to the motor and positioned to rotate relative to the housing. The first and second drums are positioned to enable rope to move therearound so that the housing can selectively ascend or descend along the rope. The tensioning control assembly is engaged with the rope to maintain the rope engaged with the first and second drums.
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