arc
argon
assembly
construction
craftsman
electric
electricity
engineering
equipment
fabrication
fabricator
factory
flash
gas
heat
helmet
hot
industrial
industry
iron
job
laborer
light
maintenance
manual
manufacture
manufacturing
mask
metal
metalwork
occupation
pipe
plasma
power
production
protection
repair
safety
skill
smoke
spark
steel
technology
tool
trained
weld
welder
welding
worker
working
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