Any of the following plant and machinery which is used or intended to be used mainly or exclusively in connection with the handling, preparing or storing of fuel required for the generation or storage of power in or on the lands and heritages:–

• cranes with their grabs or buckets; truck or wagon tipplers; elevating and conveying systems, including power winches, drags, elevators, hoists, conveyors, transporters, travellers, cranes, buckets forming a connected part of any such system, and any weighing machines used in connection with any such system; magnetic separators; driers; breakers; pulverisers; bunkers; gas-holders; tanks.