Complex sentence: The plant uses a continuous ship unloader, the only one of its type in the continental U.S., that moves solid fuel from the barge onto the fuel conveyor system which transports it to the two largest fuel storage domes in North America.
Split into simpler sentences: The plant uses a continuous ship unloader, the only one of its type in the continental United States. The solid fuel is transferred from barges onto the fuel conveyor system, which in turn transports it to the two largest fuel storage domes in North America.