argon
assembly
auto
construction
craftsman
electric
electricity
electrode
engineering
equipment
factory
flame
flux
gas
heat
hot
industrial
industry
iron
job
joint
labor
maintenance
manufacture
manufacturing
mask
metal
metalwork
method
mma
part
process
production
repair
safety
skill
smoke
spark
sparks
steel
technology
tig
tool
torch
weld
welder
welding
work
worker
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