architecture
belt
builder
building
climb
concrete
construction
contractor
danger
dangerous
engineering
equipment
extreme
factory
harness
height
helmet
high
industrial
industry
instrument
job
labor
line
male
people
person
professional
protection
protective
risk
roof
roofer
safe
safety
scaffolding
security
site
spark
stands
steel
structure
support
team
tool
uniform
welder
work
worker
workers
定額
A welder is welding steel on a steel roof truss. Working at height equipment. Fall arrestor device for worker with hooks for safety body harness. Worker in construction site.の素材 [FY310190239835]
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