busy
chemical
engineer
engineering
factory
fire
flame
flash
fumes
gas
glow
heat
helmet
high
horizontal
indoors
industrial
industry
job
join
labor
laborer
light
man
manufacture
manufacturing
mask
metal
occupation
one person
people
protection
repairing
s
safety
skill
smoke
spark
steel
technology
temperature
torch
welder
welding
work
worker
working
workplace
workshop