background
clothing
construction
craftsman
engineering
equipment
fabricate
factory
fire
gas
heavy
industrial
industry
instrument
iron
job
light
line
machinist
man
manual
manufacturing
mask
metal
metalwork
occupation
professional
protection
repair
repairing
safety
skill
skilled
smoke
spark
sparks
stainless
steel
technology
torch
trade
weld
welded
welder
welding
work
worker
working
workplace
workshop