black
caucasian
construction
efficiency
engineer
equipment
fabricate
factory
finished
hardhat
helmet
indoors
industry
inspection
iron
job
labor
laptop
man
manufactory
material
metal
modern
notepad
occupation
one
person
pipes
plumbing
precision
preparing
processing
production
products
protective
report
safety
skill
stack
steel
storage
supplier
technician
tube
uniform
ventilation
warehouse
wireless
worker
young