construction
dark
effect
engineering
equipment
fabrication
factory
fire
gas
horizontal
hot
industrial
industry
iron
labor
laborer
light
man
manufacture
manufacturing
mask
metal
metalwork
occupation
oil and gas
oil refinery
orange
person
protection
repair
safety
skill
skilled
smoke
spark
steel
street
technical
technology
tool
torch
weld
welded
welder
welding
welding sparks
welding torch
work
worker
working