金属産業
artificial
backgrounds
business finance and industry
construction frame
construction industry
craftsperson
crane
engineer
engineering
equipment
factory
flame
heat temperature
industrial equipment
industry
iron metal
light natural phenomenon
maintenance engineer
manual worker
manufacturing
manufacturing equipment
men
metal
metalwork
occupation
occupational safety and health
protective workwear
repairing
safety
skill
smoke physical structure
sparks
steel
steel worker
unrecognizable person
welder
welding
welding torch
work tool
working
working class
workshop