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