Tunnel Boring Machine (TBM)
Keywords
construction,
tunnel,
industrial,
underground,
men at work,
inspect,
repair,
men at work,
helmet,
working,
technology,
equipment,
boring,
engineering,
infrastructure,
transport,
subway,
subway,
industry,
transportation,
railway,
machine,
train,
site,
concrete,
rail,
tube,
drill,
machinery,
drilling,
railroad,
work,
building,
urban,
dig,
hole,
engineer,
cutter,
vehicle,
line,
metal,
structure,
pipe,
round,
circular,
excavation,
iron,
steel