society > occupation and work > worker > workers according to type of work > manual or industrial worker > utility service workers > [noun] (24)
Subcategories:
— designer or constructor of public utilities (1)
— one who installs a service, etc. (1)
— plumber (6)
— pipe-layer or -fitter (5)
— official in charge of water supply (2)
— drain layer (1)
— electrician (5)
— gas-fitter (3)