accept the risks
apartment construction
blue sky
building
building construction
civil engineering
civil engineering construction
collaboration
confirmation
construction
construction site
control lever
crane
driving
heavy equipment
helmet
high rise apartment
high rise building
hook
japan
large
largesized crane
lever
lower
mansion
operation
outdoor
qualification
raise
review
sky
skyscrapers
steel
sun
sunny
visual
weather
weight bend
wire
wireless
work together
workers