arc
assembly
auto
blue
car
construction
craftsman
equipment
erecting
fabricate
factory
fire
flash
gas
hot
industrial
industry
job
join
labor
laborer
light
making
man
manual
manufacture
manufacturing
mask
metal
production
protection
repair
safety
skill
skilled
smoke
spark
steel
structure
technical
technology
trained
tungsten
weld
welded
welder
welding
work
worker
workplace