LTK: Getting down to science fact versus science fiction - a lot of readers are fascinated by stories, like Star Trek, that include transportation technology (the transporter) that can transport matter (a person) through time and space.
You may not recognize your dog's bark or the idle of your car's engine, but without being told, you probably do recognize the sound of a phaser blast, a transporter powering up, or a communicator flipping open.
Star Trek, however, had space shuttles and the transporter or teleportation device that made it possible in the fiction of the show to have large space-only vessels for the main part of Starfleet.
A transporter of this kind, when fitted with a grab, is a very efficient machine for taking coal from barges and depositing it in a coal store.
From the lower flange of a suspended !; runway, made of a single I section, run wheels, from the axles of which the transporter is suspended.