Tunnel piperoof grouting

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Geneva, Switzerland - May 22, 2014: Construction of piperoof grouting for tunnel construction

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Size: 5472px × 3648px
Location: Geneva, Switzerland
Photo credit: © Oliver Förstner / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: boring, building, chamber, concrete, constructing, construction, digging, dirt, drill, drilling, engineer, engineering, excavation, front, geology, grouting, machine, machinery, metro, mineral, mining, piperoof, power, securing, site, soil, subway, support, supporting, train, tunnel, tunneling, underground, worker, working