adjustment

aluminum

auto

automation

blue

business

construction

control

device

engine

engineering

equipment

factory

floor

green

harmful

heavy

immersed

industrial

iron

joist

machine

machinery

manufacture

manufacturing

men

metal

metallurgic

pan

panel

places

power

processing

production

repair

roll

rotates

shop

special

steam

steel

technical

technology

tool

walking

windows

workers

workplace

yellow