assembly
closeup
construction
duty
equipment
factory
fill
fire
flame
flaming
heavy
hot
industrial
industry
iron
ironworks
job
labor
laboring
light
making
man
manual
manufacture
manufacturing
mask
men
metal
metalwork
production
protection
protective
repair
rod
safety
shipyard
skill
skilled
smoke
spark
steel
tool
trained
weld
welded
welder
welding
work
worker
workplace