builder
caution
construction
danger
electrode
employee
engineer
engineering
enterprise
equipment
factory
flame
flash
grinder
hand
heat
helmet
industrial
industry
iron
job
join
light
man
manual
manufacture
manufacturing
mask
metal
metalwork
occupation
people
plant
protection
protective
repairing
safe
safety
soldering
spark
steel
support
technology
welder
welding
work safety
worker
working
workshop