activity
background
belt
builder
building
climbing
connection
construction
danger
dangerous
engineering
equipment
exterior
extreme
fall
harness
hazard
height
helmet
high
illustration
industrial
industry
isolated
job
labor
male
man
metal
people
person
professional
protection
protective
risk
rope
rules
safety
scaffolding
security
steel
technology
tool
uniform
vertical
wear
white
work
worker