Large-sized machinery for the construction of a tunnel on a high-speed railway line. Construction of a large tunnel under the mountain
Palabras clave
underground,
construction,
tunnel,
industry,
work,
dark,
men at work,
subway,
industrial,
car,
machinery,
transport,
railway,
subway,
under,
building,
concrete,
road,
technology,
construction site,
builder,
city,
line,
urban,
engineering,
machine,
equipment,
engineer,
dust,
highway,
train,
architecture,
heavy,
background,
ventilation,
safety,
pipe,
depth,
modern,
danger,
large,
fitting,
speed,
europa