tubistes, steamfitters and rocketeers

There have been many different names given to those who work on, or with, pneumatic tube systems: engineers, tubistes, diagnostic scheduling technicians, steamfitters, operations coordinators, postmasters, sorters, petit facteur télégraphistes and who could forget the cambrioleurs aspirateur, or vacuum burglers!

But now I have a favourite: the rocketeers.

Thanks to the Big Apple blog for highlighting the use of the term rocketeer to refer to postal works in the New York City postal pneumatic tube system. Does anyone know the names of any other occupations associated with these tubes?

Image from Between the Seats blog.