architecture
builder
building
construct
construction
construction site
contractor
crane
development
engineering
equipment
factory
falsework
fire
formwork
foundation
framework
hard
helmet
hot
industrial
industry
iron
job
laborer
light
making
man
manufacturing
material
metal
occupation
pipe
pouring
profession
project
protection
safety
security
sheaf
site
spark
steel
structure
weld
welder
welding
work
worker
定額
The welding workers at structures site. Worker is welding steel structures. Workers are also working at high altitude with a set of fall protection devices.の素材 [FY310140824880]
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