assembly
blue
build
connect
construction
craftsman
engineering
fabricate
factory
fire
flash
gas
hot
industrial
industry
iron
job
join
labor
laborer
light
making
manufacture
manufacturing
mask
metal
pipe
power
protection
repair
safety
shop
skill
skilled
smoke
spark
steel
structure
technical
technology
tool
trained
weld
welded
welder
welding
work
worker
workplace