assembling
background
bricks
builder
building
business
busy
caucasian
confident
construction
construction crane
contractor
development
dustry
effort
employment
engineer
equipment
foremaster
form
hardhat
helmet
high
industrial
industry
inspector
installer
job
labor
male
man
manual
metal
occupation
person
placement
reinforcement
safety
site
skilled
steel
structure
support
technology
tool
uniform
wear
white
worker
young