arc

arcperson

build

building

construction

craftsman

engineering

entrepreneur

equipment

fabrication

face

factory

fire

fix

hand

heat

industrial

industry

iron

job

labor

laborer

lamp

man

manual

manufacturing

mask

metal

night

person

pipe

pipeline

production

protective

repair

safety

skilled

smoke

steel

structure

suit

technology

trained

tube

utilities

weld

welded

welder

welding

white

work

worker

working