angle

bright

circular

clothes

construction

cut

danger

different

directions

disk

electric

engineering

equipment

factory

flame

flash

flashes

fly

gloves

grind

grinder

grinding

hand

hands

hot

human

industrial

industry

iron

job

light

machine

male

man

manual

manufacture

manufacturing

metal

metalworking

motion

piece

pipe

polishes

power

production

protection

round

safety

sideways

slow

slowmotion

spark

sparks

steel

technical

technology

tool

welder

welding

wheel

work

worker

workshop