abstract
background
bars
build
builder
business
conceptual
constructing
construction
craftsman
danger
engineering
equipment
fabrication
factory
foreman
glove
gloves
hand
handwork
heavy
holding
industrial
industry
iron
ironworks
job security
laboring
man
manpower
manufacture
manufacturing
material
metal
metalwork
person
processing
production
profile
protective
sheet metal
spirit
stack
steel
steelworks
storage
symbol
water
worker
workshop