adjust
build
close up
concrete
construct
construction
construction vest
constructor
contractor
control
development
employee
employment
engineer
facility
factory
foreman
glove
hard hat
helmet
industrial
industry
labor
look
maintain
man
manufactory
manufacture
mechanic
multiracial
occupation
operate
outdoors
pipeline
plant
production
professional
safety equipment
service
supervisor
uniform
valve
work
worker
workman