acetylene
autogenous
bar
builder
building
concrete
construction
constructor
cutting
danger
dangerous
energy
equipment
fire
flame
gas
gloves
hot
industrial
industry
laborer
manufacturing
metal
metalwork
oxy fuel
power
protection
reinforcement
reinforcing
rod
safety
site
spark
sparkle
sparks
steel
technology
torch
uniform
welder
welding
work
worker
定額
A tradesman boilermaker using oxy equipment in a steel welding works. Sparks, flames and smoke come from an oxy cutting torch in a steel fabrication welding factory which is part of a coal mine.の素材 [FY31011601601]
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