architecture

bar

build

business

construction

danger

dangerous

electrodes

employer

engineering

equipment

eyewear

factory

fire

flame

flash

gloves

hangar

hard

heat

helmet

hot

indoor

industry

inside

iron

level

machine

male

man

manufacture

melt

metal

modern

plant

protection

protective

rail

safety

smoke

sparkle

sparks

spirit

steel

structure

torch

weld

welding

with

work

worker

workshop