Construction worker installing corrugated drainage pipe in an excavation trench for underground utility and water management infrastructure repair.
Schlüsselwörter
drainage,
pipe,
trench,
construction,
infrastructure,
utility,
underground,
men at work,
water,
management,
corrugated,
excavation,
ground,
repair,
drain,
installation,
system,
engineering,
sewer,
building,
site,
industry,
dirtied,
process,
civil,
development,
maintenance,
pipeline,
erosion,
control,
bedding
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