arc

arm

assembly

automate

build

construction

craftsman

device

dressing

duty

electrode

electronics

enterprise

equipment

factory

fire

fix

flame

flaming

flash

flattening

gun

handle

heavy

hot

improvisation

industrial

industry

job

joint

laborer

laboring

light

lining

manufacture

manufacturing

metal

metallurgy

modern

prepare

protection

repair

skill

steel

structure

tool

welding

worker

workman